Feel confident about your diamonds. By using a combination of screeners and testers from Stuller, differentiating between natural diamonds, lab-grown diamonds, and diamond simulants. Not only can these devices help you be completely transparent with your customers, but they can also assist you in discovering the origin of your in-stock diamonds. It is your reputation on the line, so feel confident in what you are selling with our complete line of screeners and testers.
What is Screening?
Screening is the process by which natural 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 natural or lab-grown. Furthermore, screening is distinctly different from detection (or testing), which involves positive identification of a diamond, lab-grown diamond, or simulant.
Shop ScreenersWhat is Testing?
Testing is the process by which diamonds are definitively separated from lab-grown Moissanite and other simulants.Testing instruments typically separate stones based off of their thermal and electrical conductivity, but they have 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 TestersCompare Testers
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ARI by Presidium® Diamond Screener
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Adamas by Presidium® Tester
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SAM by Presidium® Tester
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Presidium® Gem Tester
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GemOro® Superior Instruments Testerossa Tester
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Presidium® Multi Tester III
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GemOro® Superior Instruments UltraTester™ 3+
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Presidium® Diamond Mate Tester
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Compare Screeners
| Product | Stones Processed | Mobility | Stones Identified | Test Time | Smallest Size Detected | Price |
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DiaTrue CXL2 Screener
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DiaTrue CS2 Screener
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GIA iD100® Gem Screener
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DiaTrue Mobile V2 Screener
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Presidium® Synthetic Diamond Screener II*
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Stuller's Diamond Screening
Protects Your Business
We are at the forefront of diamond screening with robust practices that use the most advanced technology available.
Learn MoreImportant Update on Lab-Grown Diamond Testing and Screening
As early adopters and promoters of lab-grown diamonds entering the jewelry space, Stuller supports rigorous testing and screening procedures as well as strict industry standards. It has recently come to the attention of the Stuller Gemological Lab™ that manufacturing methods for lab-grown diamonds have changed in a way that impacts testing and screening.
A high percentage of HPHT colorless lab-grown diamonds in the United States market are containing a relatively higher level of Boron. This higher concentration of Boron results in a tendency for testers and screeners using UV transparency or UV reflectance technologies to mistakenly identify diamonds as Moissanite and even natural diamonds. Our tests show that these results occur more commonly in fancy-shaped lab-grown diamonds.
To accommodate for these manufacturing adjustments, we encourage jewelers to have access to at least one tester and two screeners of differing technologies to reduce the possibility of misidentification.
You can trust that any lab-grown diamond and piece set with lab-grown diamonds provided by Stuller is thoroughly tested and screened to the highest industry standard.