2019 Oscar Award Jewelry Trends Blog Banner

Star-studded Fashion at the 2021 OSCARS

As the crown jewel of this year’s adjusted award season, last night’s Academy Awards held up to the pandemic-era standard. Although the red carpet and attendee list was reduced for this year’s event, those who were in attendance made their presence count. If you’re looking to know exactly what the latest and greatest in fashion is, just look at this year’s star-studded celebrities attending the Oscars.

This year, Shelby and Taylor from Stuller’s fine jewelry team are giving their expert opinions on what styles topped of their lists. Follow along for all the fashion inspo you’ve been waiting for.

Shelby’s Take: Diamonds Shined Bright

Even though expectations might have been lowered for another socially distanced award show, Shelby was pleasantly surprised at the elegance that took the stage.

“Although this year’s show may have been scaled down in attendance, diamond fashion was definitely scaled all the way up,” she said. “Whether it’s Zendaya’s canary diamond suite or Isla Fisher’s stacked line necklaces, carat weight seemed to outweigh the 8.5 pound gold keepsakes across the board.”

Enjoy Shelby’s top trends from the evening.

Canary Diamonds

Spring is in the air and that means everyone is looking for the perfect splash of color. Zendaya and Andra Day were seen making their own splash on the red carpet last night sporting beautiful pieces set with sunshine-inspired stones.

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Canary yellow diamonds (DIAMOND-GEN:298100:G) are the perfect complement to any piece, such as earrings and rings. Try setting a square engagement ring mounting (122394:1581:P) or stunning teardrop earrings (84396:116:P) with diamonds that give you a spark of colorful inspiration.

Line Necklaces

Continuing on with the love of diamonds, Shelby noticed that diamond line necklaces were the real ultimate accessory of the evening. Vanessa Kirby, Isla Fisher, and Tiara Thomas were all seen sporting eye-catching diamond line necklaces. Simple in design, but truly stunning in effect. Another great fact about this trend is that is not isolated to just women. Daniel Kaluuya from “Judas and the Black Messiah” also grabbed Shelby’s attention with his own stunning line necklace. Everyone loves a versatile piece!

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The beauty and elegance of this accessory cannot be emphasized enough. For a classic appeal, choose a white gold line necklace set with natural diamonds (68226:101:P). For a more progressive style, enjoy a stunning graduated line necklace set with lab-grown diamonds (653717:LG101:P).

Ear Climbers

Who doesn’t love a good stackable trend? Shelby certainly does and noticed that Regina King glowed with diamond ear climbers as she made her directing debut this season. Producer of the feature documentary “Collective” Bianca Oana also looked beautiful with floral-inspired ear climbers. Floral-inspired accessories in fashion are standing out and are more than just a seasonal favorite.

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A post shared by Regina King (@iamreginaking)

Finding floral-inspired climbers to add to an ear stack collection is an absolute necessity. Shelby’s top recommendations include two gorgeous earring climbers (86946:600:P and 81221:60000:P).

Taylor’s Take: The Award Goes to Layers

In Taylor’s opinion, the real Academy Award winner is a solid layered combination, particularly on the fingers and wrists.

“Celebrities were layering on the jewelry after their year-long break from the red carpet,” she said. “Chunky rings were having a moment on both men and women! Lots of stacks happening on the fingers and wrists. Why wear one ring when you can wear five?”

Honestly, we couldn’t agree more. Check out Taylor’s favorite looks from the evening.

Chunky Rings

Ring stacks are a prominent look among men and women with last night being no exception. Colman Domingo and Trish Summerville were perfect examples of having stunning ring stacks made with beautifully chunky rings.

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A post shared by Colman Domingo (@kingofbingo)

Finding ring statements for both daily wear or formal occasions are all about expressing personal style. Choose from Stuller’s selection of dome rings that truly go with anything (124572, 72173, 52257, and 5206).


Rings weren’t the only chunky accessories that saw some love last night. Taylor had a keen eye and noticed some chain pieces capturing attention. Lakeith Stanfield featured chain both on his neck and wrist. He took a bold look to another level and really made us love this modern trend even more.

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A post shared by The Academy (@theacademy)

It’s no secret that we love the chain trend, so we are happy to take any opportunity to feature a favorite piece. Stanfield’s look reminded Taylor of a stunning accented curb bracelet (BRC822:601:P) in our collection that would look perfect for someone seeking to stand out.

Colored Accents

Taylor agreed with Shelby that it was clear that a splash of color was a clear favorite last night. Angela Basset joined Zendaya and Andra Day in the world of color with jaw-droppingly gorgeous earrings that went perfectly with her vibrant red ensemble.

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Colorful gemstones deserve their chance to grab attention as well! Pairing gemstones and diamonds together make a match made in heaven, as seen with these lab-grown ruby and diamond accented dangle earrings (86989:6020:P).

Award Show Beauty

Shout out to Shelby and Taylor for giving us their hot takes on this year’s fashion seen at the Oscars. As expected, the Academy Awards did not disappoint in the realm of fashion last night. Judging from Shelby and Taylor’s picks, styles that are bold and make a statement are where you should take inspiration. We can’t wait to see where these looks go throughout the year!

New Shapes and Shine Come To Modern Brilliance

Modern Brilliance® provides the finest in quality lab-grown diamond bridal and fine jewelry. This collection of lab-grown luxury goes beyond traditional jewelry options to offer brilliant looks at fantastic price points. From earrings and necklaces to bracelets and rings, Modern Brilliance provides on-trend and eye-catching styles that are sure to make anyone smile.

Stuller is excited to reveal several additions to its Modern Brilliance collection. These additions bring new products and new ways to interact with this unique line of jewelry. Enjoy these highlights of the latest launch and explore these new features on our website at Stuller.com/ModernBrilliance.

Stone Shape Expansion

Joining our round shape styles are the new straight baguette styles. Enjoy this new lab-grown diamond shape in both bridal and fine jewelry.

Top Bridal Picks

Our team has selected the best-selling and trending eternity and anniversary bands, contour bands, and ring guards. These products are available in both round and straight baguette lab-grown diamonds.

New Products

We are excited to now offer huggies in three new sizes along with additional trending ear studs, line bracelets, and stackable rings all set with lab-grown diamonds.

Everything You Need in One Place

Our Modern Brilliance page on Stuller.com provides easy access to lab-grown diamond jewelry styles; product spotlights within bridal, jewelry, and 302® Fine Jewelry; and educational resources for lab-grown diamonds.

Learn more about recent news regarding the 302 Fine Jewelry x Modern Brilliance Collaboration and how lab-grown jewelry is being featured by major fashion publications this year on our blog.

Lab-Grown Luxury Turns Heads in the Fashion World

Galentine’s Day: Celebrating Female Friendships

We are just days away from the ultimate day of romance and love. But before we get there, make time to recognize a very special day made for a different kind of love: Galentine’s Day. Celebrated on February 13th and very much in line with the season of love, Galentine’s Day stands as a testament to the female friendships women all over the world rely on and cherish.

Whether someone celebrates the traditional day of love or not, Galentine’s Day is a great way to celebrate your best girlfriend. But if there is one thing that we’ve learned from this holiday, it’s that you don’t need just a day to celebrate the power of female friendship. Take a look at these perfect gift solutions to help show love to a gal pal.

Personalized Jewelry

Everyone feels warm and fuzzy when there is a special and personal touch behind a gift. Whether it’s a necklace with the date two friends met or a ring with the

recipient’s birthstone, a gift with a story behind it will show true love between the best of friends. Check out our top picks for personalized jewelry gifts.

Shop these styles at Stuller.com

653725 | BRC782 | 87512 | 87582 | 653715

BFF Jewelry

Sometimes the perfect pairing is between two best friends. A way to celebrate that friendship is matching jewelry. From identical necklaces to keep that special someone close to sharing one half of a pair of earrings, keeping your best friend close is the perfect way to celebrate Galentine’s Day. Here are a few suggestions on BFF jewelry.

Shop these styles at Stuller.com

653727 | BRC815 | 52374 | 2000417 | 87594

302® Fine Jewelry and Modern Brilliance® Solutions

One of the best gifts to give to a gal pal is something to help her feel confident and express her style. Stuller offers two solutions for on-trend fine jewelry and lab-grown diamond jewelry that is sure to make anyone feel their best. New products are always being developed and added to each collection to make sure best friends always have styles that are stunning and unique. See a few products we’ve hand-picked that any girl would be thrilled to have.

Shop these styles at Stuller.com

87184 | 653726 | 123286 | 87366

Ring Stacks

All jewelry tells a story and a fun, on-trend way for friends to tell theirs is through ring stacks. Simple pinky rings or bold choices complete with diamonds or gemstones make for the perfect additions to anyone’s ring stack assortment. Check out a recent blog post where our team provided style suggestions for ring stacks based on personality and taste.

Origins of Galentine’s Day

If you have never seen the popular television show Parks and Recreation, you are seriously missing out. Other than being a memorable show about friendship in a small town’s city government and being gut-wrenchingly hysterical, Parks and Recreation has left a lasting impression on popular culture even years after the airing of its final episode – including the creation of an entire holiday. Thus, the inaugural celebration of Galentine’s Day was born.

In episode 16 of season 2 of Parks and Recreation (aired February 2010), lead character Leslie Knope introduces Galentine’s Day as a day to show your love to the girls that make up your support system. Honestly, Leslie explains it best: “Every February 13, my lady friends and I leave our husbands and our boyfriends at home, and we just come and kick it, breakfast-style. Ladies celebrating ladies. It’s like Lilith Fair, minus the angst. Plus frittatas.”

Celebrate BeyDay with Styles Fit for Queen Bey Herself

The Beyhive is buzzing as we are bowing down in celebration of the flawless Queen Bey’s birthday. For 39 years, Beyoncé has graced the world with stellar performances, empowering music, and jaw-dropping style. Those who have been long-time fans of the Houston-native musical icon look back on various phases of her career and reminisce – her time with Destiny’s Child, the creation of everyone’s favorite alter ego Sasha Fierce, the love story between her and her husband Jay Z, the feeling of confidence you got when singing Single Ladies at the top of your lungs, the birth of Blue Ivy, the iconic gold Peter Dundas gown that highlighted her baby bump at the Grammy’s, performing at Coachella shortly after giving birth to twins Rumi and Sir.

Not only has Bey created memorable musical moments for us over the years, she is also known for her impeccable style and striking jewelry selections. Her looks are always blowing us away – from beautiful diamond pieces and gold that could break your heart to cutting-edge, fashionable hoop earrings and gorgeous emeralds. If you want your customers to stun the masses like Bey, be sure to suggest styles that allow them to be bold, be confident, and be noticed. Want some inspiration? Check out some of our favorite pieces that will make you want to put a ring on it.

Big, Bold, Beautiful Diamonds

Diamonds certainly are Beyoncé’s best friend. From being sewn into clothing – such as the black diamond dress from her Formation World Tour – to being used in jewelry settings that are the talk of town, like the Messika silk tie diamond necklace from her performance at the 57th Annual Grammy Awards, her approach to utilizing diamonds in fashion is inspiring and eye-catching. Nothing grabs attention quite like a beautiful diamond and we are crazy in love with them.

While having entire garments made of diamonds isn’t the goal for the average customer, suggest sporting elegant Lab-Grown Diamond Earrings (653632) or a stunning Diamond Pavé Ball Pendant (653709) to let your customer feel big, bold, and beautiful.

lab-grown diamond earrings
Item # 653632

Diamond Pavé Ball Pendant
Item # 653709

Stylized Gold

Various metals will come in and out as trends, but gold will always be in style. Beyoncé left a lasting impression with gold during the 59th Annual Grammy Awards. Not only did she rock the gold Dundas gown, but she was also adorned with an intricate gold choker, golden hoop earrings, and an assortment of bangles on each arm. Not to mention the giant gold headdress complete with a halo.

Adding gold to your customer’s ensemble will help them complete any look, both casual and formal. Stuller’s Old World Globe Necklace (87532) can brighten anyone’s day and make them feel like they run the world.

Gold Old World Globe Necklace
Item # 87532

Hoop Statement Earrings

The Queen Bey is known for her accessories that make a statement and grab attention. One of our favorite looks are her hoop earring choices. For example, in 2017, she attended a Bruno Mars concert shortly after giving birth to her twins, Rumi and Sir. She wore a set of gold hoop earrings with the word “chunky” placed on them. Women’s bodies are often scrutinized after giving birth, but Beyoncé had a body positive message to love your body because it is golden.

Encourage your customers to get their own hoops that make them feel golden with our gorgeous Flexible Endless Hoop Earrings (52243). Pair them with any item from our Petite Pavé Dangle Collection for a unique statement piece.

Flexible Endless Hoop Earrings
Item # 52243

Large, Elegant Emeralds

You won’t only see Bey wearing dazzling diamonds. Another gemstone she keeps prominent in her collection is emeralds. One of our most memorable moments includes her diamond and emerald baubles valued at $10 million that she wore to the 57th Annual Grammy Awards where she won “Best R&B Performance” for her song Drunk in Love. Let’s also not forget the emerald Lorraine Schwartz earrings and ring valued at $2.5 million she wore when she sang the National Anthem at President Obama’s Inauguration in 2013. These pieces are in our sweet dreams and we are green with envy.

Your customers could add a touch of emerald to their ensemble at a great price point with an Emerald Petite Dome Ring (72173) from 302® Fine Jewelry. While not the flashy-sized emeralds donned by Beyoncé, this sleek and modern emerald ring is rising in style and popularity. It’s the “little something extra” Queen Bey would be proud of.

White Gold Emerald Petite Dome Ring
Item # 72173

These styles are truly irreplaceable and always fill us with inspiration. Happy Birthday, Beyoncé. Stay fierce until the end of time.


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Award-Winning Stuller Designs and the Inspiration Behind Them: Part 2

In Part 1, we looked at our lab-grown, personalization, and gemstone winners.  In Part 2, we’ll look at the inspiration behind our unique bridal winners.

Ballerina Bride

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This updated ballerina was designed for the romantic bride who knows that more is more- who can layer antiques with modern trend flawlessly. A traditional halo look, with the geometric north/ south baguettes that has a distinct personality.


123996*: 2nd Place JCK Platinum Jewelry $10,000 & Under

Glamorous Designs

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This engagement was inspired by glamorous brides who are seeking a stacked look in her engagement. A design that’s markedly different from the run of the mill solitaire, we picture this for the bride who’s trendy, feminine and unique in her center shape choice.  


123734*: 2nd Place JCK Best Bridal Design $2,500 & Under

Riveting Rose Cuts

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Over the past year, we have been layering rose-cut engagement rings into our assortment. Rose-cut stones date back to the sixteenth century, but have grown in popularity the last few years.  These trending stones allow us to design into bigger carat looks while keeping the total carat weight low because of the 24 facets. These have such a beautiful, low profile look on the hand and are a perfect fit for the low key, elegant bride who wants a non-traditional diamond engagement ring.


Rose-cut and our other unique cut diamonds can be shopped here.

124130*: 3rd Place INSTORE Best Engagement/Wedding Rings Under $5,000

*dictates items available in platinum

Don’t forget to check out Part 1 of this blog series, where we look at our winning lab-grown and gemstone looks.  You can also browse all of our 2020 award-winning designs here.

Do you have a favorite award winner? Let us know in the comments below!

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Lab-Grown Diamonds: Let’s be completely clear, Part 1

As Lab-Grown Diamond (LGD) sales continue to grow with no end in sight, complete transparency — for you and us — has never been more important. None of us want to damage trust by selling a LGD as a Natural Diamond or a natural as a Lab-Grown diamond. LGDs are chemically, optically, and physically similar to Natural Diamonds, however they are created in a lab rather than 150 miles below the earth’s surface. LGDs have scintillating radiance, at a more attractive price. All customers need to know this.


In this first blog on transparency, we’ll look at how we make sure you know you are buying an LGD from Stuller. And the second blog will discuss your responsibilities when selling a LGD or LGD-set jewelry.

The following steps mark the individual efforts Stuller takes to provide you with transparency in purchasing Lab-Grown Diamonds from us.

Buy from reputable partners

If we don’t know exactly what we’re buying and receiving, how can we give you that same assurance? We purchase our Lab-Grown Diamonds from reputable vendors with a proven track record, and they are required to screen their product before shipping it to us. We back this up by screening all colorless and near-colorless Diamonds that enter our facility.

Stuller has a strategic service arrangement with GIA (Gemological Institute of America®). As an independent entity from Stuller, located in our facility, it is staffed by GIA’s screening specialists, who use GIA’s proprietary technology to perform the work. GIA’s instruments screen round melee diamonds in sizes 0.005 CT through 0.24 CT. The technology also sorts and color grades (D-to-Z) natural diamonds into color ranges.  You can learn more in our Diamond Screening Guide.




When you shop on Stuller.com, Lab-Grown Diamonds have their own clearly marked categories to eliminate confusion. All loose LGDs and LGD set jewelry — online and in catalogs and brochures — have the LG badge in a particular blue color. And all product descriptions include “lab-grown diamond.” If you shop by phone, our Diamond Specialists specifically address Natural Diamonds vs. LGDs and explain the differences so you can share this information with your customers.

Lab-Grown Icon

Storage & Protocols

We store Lab-Grown Diamonds in separate vaults from our Natural Diamonds. And to avoid any possibility of mixing them, Diamond Specialists cannot have both types of diamonds on their desks at the same time.

Packaging & Invoices

We sell three levels of Lab-Grown Diamonds: large stones with a GCAL certificate or IGI report, large stones without reports, and melee. We store and ship the large LGDs with reports in a distinctive blue box that you can immediately identify as an LGD. The large stones without reports and the melee arrive wrapped in a blue paper nearly identical to the box color.

Your invoice will also state that you purchased one or more Lab-Grown Diamonds.

If you have any further questions about Lab-Grown Diamonds, call 800-877-7777, ext. 5 to speak with a Diamond Specialist.

Watch for the follow-up transparency blog later this month. It will address what and how you need to share LGD information when you sell them.


Award-winning Stuller designs and the inspiration behind them: Part 1

Stuller’s in-house designers form a creative hub linking our numerous merchandisers with our manufacturing operations. Our designers work back and forth with both groups to achieve the looks desired with the imagination and flair we all seek.

As Executive Director of Product Development, I take particular pride in my team’s many accomplishments. With warmest congratulations to our department, I’d like to share a few of the recent awards from JCK and INSTORE.

Personalization: Trend   JCK JCA 2020 Winner

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We always look for ways that allow our customers and their clients to express their personalities. Letters are an evergreen trend in home, apparel, and accessories.

Layering personalization up onto the ear has been one of the newest trends, as we see women and men adding more piercings to accomplish this.

We also love coming up with new combinations from our vast component libraries, mixing and matching our dangles, bails, trims, and hoops.


87230*: JCK Editorial Team as Best in Personalized Jewelry

 3rd Place Personalized Jewelry: All Price Points

From the Lab: Trend/Lab-Grown Diamonds Instore 2020 Award Winner

Using lab-grown diamonds, we can create higher total carat weight products at a compelling retail price. We designed these pieces, knowing they make a fashion statement, and flow effortlessly from day to night with their relaxed, organic forms.

We design many iterations and combinations using our vast findings library as well!


653632: 2nd Place Lab-Created Diamond and Gemstone Jewelry

From the Lab: Trend/Lab-Grown Diamonds  JCK JCA 2020 Winner

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We sometimes play with many variations to get the right combination for a casual design — it seems random when it’s anything but!


124050*: 1st Place Lab-Grown Diamond and Gemstone Jewelry

Best in Lab-Grown by Instagram Influencers and the JCK Editors

Radial Energy: Trend/Gemstones  JCK JCA 2020 Winner


With its celestial elements, we designed this necklace to inspire positivity, calm, and clarity. Starburst- and Ray-inspired designs prevail in both antique and contemporary designs.


87041*: 1st Place Best Price Point $501-$1,000

Instagram Influencers and the JCK Editorial Team for Best Price Point

Radial Energy: Trend/Diamonds

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These items can hold significant personal meaning in their symbolism and pair well with wondrous stones like opals and diamonds.


87259*: 3rd Place Best Necklace Under $5,000

Organized Clusters: Trend/Gemstones   JCK JCA 2020 Winner

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This necklace was inspired by cobblestone street patterns, with beautiful color ranges in natural gemstones. The color shift gives the piece movement and interest.


87058*: Tied for 1st Place Colored Gemstone Jewelry $2,500 and Under  

Organized Clusters: Gemstones   Instore 2020 Award Winner

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The perfectly imperfect trend inspired this necklace featuring scattered Gemstones. We used pearls to offset the diamond accents and create a casual, delicate look — an update to the multi pearl necklace center. Though it appears somewhat haphazard, the intentional placements in the design achieve the natural, organic look.


87273*: 3rd Place Pearl Jewelry Under $5,000

Organized Clusters: Diamonds    Instore 2020 Award Winner

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We drew inspiration for this ring from the happy discovery of an old master in our vault. In recreating the piece, we brought the design up to our current setting standards, and created a CAD based on the master. In the process, we lowered the height to suit contemporary taste. We loved the original design, and this dramatic update feels as modern as the day it was made!


124318*: 3rd Place Diamond Jewelry Under $5,000

Be on the lookout for Part 2 of this series, where we take a look at our winning bridal looks.  You can also browse all of our 2020 award-winning designs here.

*dictates items available in platinum

Do you have a favorite award winner? Let us know in the comments below!

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Diamond Education: How to Choose the Right Diamond Screener?

Protecting the integrity of your inventory is paramount. Understanding the differences between testing and screening while using the most appropriate instruments for each process will best protect your reputation.

Selecting an Instrument

With lab-grown Diamonds gaining a stronger presence in the marketplace, screeners and testers are no longer optional to include in your operations. They’re essential.

When purchasing a diamond screener or tester, ask yourself the following:

  • What stone specifications (size, color, shape, and loose or mounted) will I be testing?
  • How many stones will I be processing at a time — singles or large quantities?
  • What is my level of expertise with testing?
  • Do I need a portable or stationary instrument?
  • What is my budget?
  • Do I need to test for simulants?

Once you have your answers, you can identify the devices that fit your needs.

Lab-Grown Diamond Screener Social Share

Best Practices

  1. Remember, no single device can do it all — no exceptions.
  2. Understand your tester’s capabilities. Then, choose a device based on the features you need.
  3. Avoid false readings due to improper usage. False readings — such as a Diamond reading as a created Moissanite — may occur by holding your device improperly or testing on a nonconductive material. So, it’s imperative to read your device’s user manual. For added security, practice on known stones.
  4. Keep up with the latest technology. If it’s been years since you last bought a tester, look into newer devices. Each year, testing technology gets better, so older instruments may not have modern testing capabilities.

Diamond Testers

Testing is the process by which Diamonds are definitively identified. These instruments typically separate stones based off their thermal and electrical conductivity, but they have their limits. Learn the limitations of your tester and know when to bring in another device (or send it off to a lab with more advanced equipment). Shop Diamond testers on Stuller.com.

Diamond Screeners

Screening is the process by which mined Diamonds are separated from lab-grown Diamonds. Since it’s impossible to identify a Diamond’s growth origin by sight alone, screening equipment is the surest way to determine whether a Diamond is mined or lab-grown.

Furthermore, screening is distinctly different from detection, which involves positive identification of a mined Diamond, lab-grown Diamond, or simulant. Find the right Diamond screener on Stuller.com.

Diamond Screener Promise Gem Lab

Introducing the DiaTrue Diamond Scanner

The DiaTrue CS and the DiaTrue CXL by OGI Systems are instruments that combine the functionality of multiple machines to ensure maximum security. These machines can detect and identify:

  • Mined Diamonds
  • HPHT lab-grown Diamonds
  • CVD lab-grown Diamonds
  • Created Moissanite
  • Cubic Zirconia
  • CVD-Coated Cubic Zirconia and Moissanite

Both scanners have an embedded 10.9-inch touch screen that displays results in clear, easy-to-read colors. These machines can archive stone data for later use as well as create and print certificates.

The new DiaTrue CXL features a 13×10 cm tray space to accommodate larger parcels, finished goods, watches, and more.

Why do I need a Diamond Screener?

Diamonds enter your store from many sources. Whether buying Diamonds from a dealer or taking in jewelry for repairs and remounts, there are many opportunities for undisclosed stones to enter your stock. You must be absolutely certain of your inventory and take all measures to avoid undisclosed lab-grown Diamonds — because your reputation is at stake.

Luckily, the DiaTrue combines the functionality of multiple machines to ensure total assurance. This device can detect natural Diamonds, CVD and HPHT lab-grown Diamonds, Cubic Zirconia, and Moissanite — all in one scan. Operate with confidence knowing you’ve got the right tool to positively identify lab-grown Diamonds and simulants.

Shop the DiaTrue Diamond Scanner on Stuller.com

Once you choose the right diamond screener, you’ll be on your way to passing peace of mind to customers and securing your reputation as a trusted professional.

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Diamond Education: How Does Stuller Uphold Its Diamond Screening Promise?

How many undisclosed Lab-Grown Diamonds are you willing to sell? For Stuller, the answer is zero. That’s why we screen 100% of all colorless and near-colorless diamonds that pass through our hands. We uphold our diamond screening promise to protect you, the independent jeweler, your customers, and the industry. It is a question of integrity. It’s also a requirement of the FTC Guides for the Jewelry Industry.

How does Stuller uphold its Diamond screening promise?


Many years ago, when Stuller began screening for undisclosed lab-grown Diamonds, we took several important steps. We reviewed every way a Diamond entered our building and evaluated the risk levels based on the probability of contamination associated with each supply. This helps everyone down the pipeline to understand risk levels associated with each avenue into Stuller.

From there, we developed new processes or modified existing procedures to ensure that we screen all Diamonds arriving at Stuller. In short, we leave no Diamond unturned or unscreened.

Diamond Screening Promise Gem Lab

Our Diamond Screening Promise

As a major supplier, we are in a position to protect our supply chain, your reputation, and your customer’s confidence. We gladly accept this responsibility by maintaining:

  • A zero-tolerance policy for Undisclosed Lab-Grown Diamonds that places stringent testing requirements on all of our suppliers.
  • The Stuller Gem Lab, an advanced diamond screening lab managed by a full-time Graduate Gemologist.
  • A strategic services arrangement with GIA® to screen and color grade all round melee sizes 0.005 CT through 0.24 CT.
  • The ability to screen all shapes and sizes of colorless and near-colorless melee (D to N) as well as set jewelry.
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Diamond Screening Milestones

2012: Stuller begins screening all Diamonds 15 carat and larger for ULGDs using an early screening machine.

2014: Stuller acquired the sophisticated Automated Melee Screening Device (AMS) from DeBeers’ IIDGR division. It screens round Diamonds 1.4mm and larger providing an effective and efficient way to test melee.

2016: Stuller added IIDGR’s (DeBeers) PhosView, which allowed us to screen all shapes that are High-Pressure High-Temperature (HPHT) grown.

2017: Stuller added the AMS2 (the second generation of the original AMS) to our Diamond screening process. This technology screens round and fancy shapes, as small as 0.85mm detecting both HPHT and CVD grown Diamonds, screening 10 times faster (3,600 stones per hour) than the original AMS (which we continue to use).

Stuller added the GIA® iD100which combines advanced spectroscopic technology to identify natural Diamonds giving results in two seconds.

2018: Stuller added the J-Smart Plus to batch screen all Diamond-set products. Stuller also added the DiaTrue CS (by OGI) to screen set rings and parcels of stones.

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Stuller Gem Lab

Stuller Gem Lab uses the latest advanced technologies available to separate natural Diamonds from their lab-grown counterparts. These two supplies are kept totally separate from one another. Their paths never cross to ensure complete confidence. All lab-grown melee Diamonds are kept in a separate room within the facility, and their containers are clearly labeled.

To stay at the forefront of Diamond screening, we continuously invest in the latest technology. The Stuller Gem Lab has a multi-tier screening process managed by a full-time graduate gemologist. All colorless and near-colorless Diamonds and Diamond jewelry entering our facility are screened on an array of technologies depending on shape and size. Referrals from these screening technologies receive a final determination from our gemologist who performs further screening or is sent to a GIA® Advanced Lab.

Diamond Screening Promise Gem Lab

GIA® Melee Analysis

In addition to all of these internal controls, Stuller has established a strategic service arrangement with GIA (Gemological Institute of America®) by offering GIA’s Melee Analysis Service inside our global headquarters in Lafayette, Louisiana. All round melee from sizes 0.005 CT through 0.24 CT are screened on-site by GIA staff independently operating the GIA-owned analytical instrumentation in a dedicated, secure space.

This results from a strong continuous collaboration between Stuller and GIA leadership. GIA is the most trusted gemological authority in the industry. Therefore, there is no one better than GIA for Stuller to rely on to deliver on our commitment to correctly represent the product we are selling.

Learn more about Stuller’s extensive diamond screening promise here on Stuller.com

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Diamond Education: How are Lab-Grown Diamonds Created?

Lab-grown diamonds are an increasingly popular, attractively priced center stone option. In the past few years, we’ve seen a growing trend among consumers toward interest and acceptance of lab-grown diamonds.

In July 2019, MVI Marketing asked 1,154 millennial consumers aged 21–36 if they’d consider a lab-grown diamond for the center stone of their engagement ring. A whopping 67% said yes — and 21% said maybe.

Remember, your knowledge gives you the opportunity to build trust.

Read on to learn about the differences between natural and lab-grown diamonds as well as how lab-grown diamonds are created.

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Diamonds Types

Natural diamonds built the industry, and you can say they’re pretty timeless: they formed 1.0 to 3.5 billion years ago. Their age and their unrivaled cultural symbolism — “a diamond is forever” — support their long-standing appeal.

Based on their impurities, all diamonds are divided into two types:

Type I Diamonds

Type I diamonds contain nitrogen and account for 98% of natural diamonds. According to the cluster arrangement of those nitrogen atoms, this category is further subdivided into two types: Type 1a and Type 1b.

  • Type 1a diamonds are plentiful, and their color varies from near-colorless to light yellow.
  • Type 1b diamonds are rare and typically strong yellow in color.

Type II Diamonds

Type II diamonds have no measurable level of nitrogen and account for only 2% of natural diamonds. Then, they are further subdivided. If containing boron, diamonds are Type IIb. If not, they are Type IIa.

  • Type IIa diamonds have no measurable levels of nitrogen or boron. They are usually colorless but also come in shades of light brown. Many of the world’s historical diamonds — like the Cullinan and the Koh-i-Noor — are type IIa.
  • Type IIb diamonds — unlike all other types — conduct electricity and exhibit beautiful blue or blue-gray shades due to the presence of boron. The Hope Diamond is the most famous type IIb diamond. *NOTE: Some IIb diamonds with trace amounts of boron remain colorless, yet still conduct electricity. Likewise, Moissanite is electrically conductive. Because of this, probe-type testers measuring for conductivity may falsely call out type IIb diamonds as Moissanite.

That’s quite a range for diamonds to fall into, but what about lab-grown diamonds? As it turns out, they play by slightly different rules — solely thanks to the method in which they’re grown.

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Lab-Grown Diamonds

Lab-grown diamonds exhibit the same optical, physical, and chemical properties as natural diamonds. Unlike natural diamonds, which can be either type I or type II, all colorless lab-grown diamonds are type II.

While it is nearly impossible to detect lab-grown diamonds by sight, the growing process leaves behind evidence of any diamond’s origin. Advanced screening and testing equipment is necessary here. (Just remember — no single device can do it all.)

So, How Are Lab-Grown Diamonds Created?

Lab-Grown Diamond Shot Serial NumberLab-grown diamonds got their start in the ‘50s with General Electric — yes, the power company. Although General Electric (specifically, H. Tracy Hall, but that’s a story for another day) pioneered lab-grown diamonds, they grew these diamonds through just one process. Today, there are two.

We’ll start with the first.

Chemical Vapor Deposition (CVD)

The CVD process was invented first— in 1952 by William Eversole at Union Carbide. This process allows diamonds to grow in an entirely different way than the HPHT process. CVD starts with a natural diamond slice (or seed) placed in a chamber and exposed to less extreme temperatures (approximately 1,200–3,000 degrees Fahrenheit) and lower pressure (100 – 550 PSI).

Recent advancements have made this growth process more advantageous. Methane and hydrogen gas are injected into the chamber and combined with high heat. The electrons separate, forming plasma gas. The freed carbon then rains down on the seed, growing new diamond crystals. Typically, this process produces brown or gray diamonds, which are turned colorless through an HPHT annealing process. This process takes several days to a few weeks.

High-Pressure High-Temperature (HPHT)

The HPHT process grows diamonds using diamond presses, machines that mimic the extreme conditions that form diamonds within Earth’s upper mantle: intense pressure (725,000 – 870,000 PSI) and intense heat (2,300–2,900 degrees Fahrenheit). In this process, diamond source powder dissolves in molten metal flux and deposits on diamond seed crystals.

This process dates back to 1954. By the 1970s, General Electric started commercially producing “gem-quality” HPHT lab-grown diamonds. In the following years, General Electric and other companies grew larger sizes of non-gem-quality diamonds strictly for industrial use. Since then, HPHT technology has come a long way, now growing lab-grown diamonds for use in jewelry. This process takes several days to a few weeks.

Learn more about Lab-Grown Diamonds at Stuller.com/LabGrownDiamondsInfo