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

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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.

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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.

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Labeling

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.

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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.




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

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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.

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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.

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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