Diamond Gemstone Testers, Jewelry Tools and Loupes | GemTrue
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Check Out Our Display Boxes for Diamonds & Gemstones

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  • DK21676-12 Deluxe Diamond Boxes in a Luxury Tray Set - GemTrue
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  • DK21624-8N Self-Standing Gemstone Display Boxes Tray Set - GemTrue
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  • DK21663-24N Diamond Display Boxes in a Luxurious Lockable Case - GemTrue
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check out Our Gemological Instruments

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  • High Quality Refractometer with interior scale - GemTrue
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  • DK91006-900 Precision Gem Refractometer - GemTrue
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WHY CHOOSE GEMTRUE?

Gemologist-Grade Precision

Engineered specifically for jewelers, appraisers, and gemologists. Our loupes deliver minimum-distortion optics and our testers feature fast, highly accurate identification technology.

Factory-Direct Quality

Professional tools built for everyday workshop use. Every multi-tester, loupe, and display box undergoes strict quality inspection to ensure absolute reliability on your desk.

Global Workbench Delivery

Fast, secure worldwide shipping direct from our facility. Enjoy expert customer support and technical assistance whenever you need help setting up your equipment.

Global Patents & In-House Engineering

Patented Synthetic Diamond Testers

US & European patented technology for precision CVD/HPHT synthetic diamond testing.

Explore Testers

Patented Display & Box Designs

US & Australian patented display box tray structures engineered for maximum visibility.

Explore Display Boxes

Precision Loupes & Optics

Patented optical housing with custom achromatic lenses for minimum distortion.

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Let customers speak for us

from 223 reviews
Much simpler to operat

Much simpler to operate, can’t beat the price. Excellent tester.

Frank Mascari
GemTrue APEX – ASSURE TESTED Advanced Synthetic Diamond Tester - DK10300
GemTrue APEX – ASSURE TESTED Advanced Synthetic Diamond Tester - DK10300
The microscope filter and Immersion cell combo

I have begun using the cell on a gemmological stereo microscope, and the immersion cell sits on the 'ledge' above the adjustable iris diaphragm with a very small amount of wiggle room - this does not appear to be raising any issues. The microscope filter and Immersion cell combo is a well-constructed unit of good size which makes it more stable whilst maneuvering the gemstone with tweezers. The same can be said for adjustment the required light source/s on the gemstone and the white diffuser is easily placed under the cell. Thus, the gemstone inclusions are easier to bring into focus to observe.

Chris Matthews
DK91015 - Microscope Filter and Emersion Cell Combo
DK91015 - Microscope Filter and Emersion Cell Combo
Excellent quality, beautiful presentation and great customer service

I am extremely happy with this Diamond Selector Kit.
The product arrived much faster than expected.
The quality and overall presentation are absolutely beautiful and very professional.

The kit looks elegant, feels high-end and is perfect for jewelry consultations. It helps customers visualize different diamond sizes and shapes directly on the hand, which makes the consultation process much easier and more enjoyable.

I am especially impressed by the optical appearance and the high-quality execution of the entire set.
I am very glad that I decided to purchase this premium selector kit.

I also want to mention the excellent customer service.
I needed a VAT invoice for my business purchase and the team responded immediately and was very kind and helpful throughout the process.

Overall, I am very happy with my purchase and will definitely order again in the future.

Excellent product and highly recommended!

Barbara Ziegler SYNO
Patented Premium Magnetic Diamond Selector – Visual Diamond Size & Shape Kit DK110-5
Patented Premium Magnetic Diamond Selector – Visual Diamond Size & Shape Kit DK110-5
Everything was beautiful! And great service!! Thank you so much

Everything was beautiful! And great service!! Thank you so much.

Claudine Hannigan
Deluxe Hearts & Arrows Scope with Base & Clear Display Stand DK19008
Deluxe Hearts & Arrows Scope with Base & Clear Display Stand DK19008
A True Money Saver

This is a great piece of kit, My Veritas has already paid for itself by testing over $1200 worth of purchased IGI Lab created diamonds that were proven to be Moissanite with fake certificates and have been returned for full refunds, Many thanks for the life saver GemTrue

John Dalton
The GemTrue Veritas – Top-Quality Synthetic Tester for Loose Diamonds and Simulants DK10100
The GemTrue Veritas – Top-Quality Synthetic Tester for Loose Diamonds and Simulants DK10100
Exceptional Tool for Gem and Ring Inspection

The tool is very impressive and highly practical. It can be used to examine both rings and loose stones, including diamonds, zircons, and any round-cut gemstone. The rotating bottom disc allows for a smooth 360-degree view, which makes inspections much easier.

One suggestion for improvement would be to offer an optional ring holder attachment for examining single stones more conveniently. Another enhancement could be integrating a built-in light source, which would greatly improve visibility in low-light conditions.

The main idea behind this tool is to simplify the process of reading serial numbers and matching them with certificates. It also provides an excellent, clear view of the girdle area, making it a valuable addition to any gemologist’s toolkit.

ADEL
DK08101 - Inscription Loupe 10x
DK08101 - Inscription Loupe 10x
Much needed

I use a loupe daily, sometimes in proper light, many times not. Having a light is attached and not interfering is awesome. Having lwuv also great when viewing pearls. More importantly rechargeable makes it easy. 5 stars

Kevin FitzSimmons
Illuminated Rechargeable LED & UV Loupe Excellent Lens designed for Jewelers DK09103C
Illuminated Rechargeable LED & UV Loupe Excellent Lens designed for Jewelers DK09103C

Very nice lens! Rechargeable light is very convenient! I have used it several times in the fees days that I have had it and have been very pleased!

Lee Hosler
Illuminated Rechargeable LED & UV Loupe Excellent Lens designed for Jewelers DK09103C
Illuminated Rechargeable LED & UV Loupe Excellent Lens designed for Jewelers DK09103C
a tester that is accurate

I had a less accurate probe that told me the moissanite was a cvd/hpht diamond. that will be going back for a refund . this tester DK10100 what you got no BS. I love it ,had to pay the price but in the end it will save time and money.

carlos Benitez
The GemTrue Veritas – Top-Quality Synthetic Tester for Loose Diamonds and Simulants DK10100
The GemTrue Veritas – Top-Quality Synthetic Tester for Loose Diamonds and Simulants DK10100
Great for Low Light Conditions

This loupe is perfect for inspecting diamonds and moissanite in low-light settings. The LED light makes it much easier to see details clearly. It’s compact and fits right in my pocket, making it super convenient to carry around.

Leah Scott
Illuminated Rechargeable LED & UV Loupe Excellent Lens designed for Jewelers DK09103C
Illuminated Rechargeable LED & UV Loupe Excellent Lens designed for Jewelers DK09103C
Ideal for Jewelers and Gemologists

I use this set in my jewelry business to show clients various diamond shapes and sizes. The diamonds and moissanite are high quality, and the case is perfect for keeping everything organized.

Sophia Martinez
Diamond Shapes and Sizes Master–Every Shape, Every Size for Jewelry Design Perfection DK106
Diamond Shapes and Sizes Master–Every Shape, Every Size for Jewelry Design Perfection DK106
Ideal for Professionals

This tester is excellent for professionals like me who work with various diamonds and moissanite. It’s precise and fast, and the combo set with the thermal tester is perfect for all my needs.

Jack White
GemTrue ARETE ALL in ONE Synthetic Diamond Combo Pro Tester DK10200-8900
GemTrue ARETE ALL in ONE Synthetic Diamond Combo Pro Tester DK10200-8900
Fast and Reliable

The tester is lightweight and works great! It gives quick and accurate results, and the UV light feature is a nice touch for fluorescence testing.

Brian Lee
GemTrue Multi Plus Diamond Tester - CZ, Moissanite, Diamond, and More DK8000
GemTrue Multi Plus Diamond Tester - CZ, Moissanite, Diamond, and More DK8000
My go to supplier for diamond display cases

Great product and price, used by only the best diamond dealers in our family. Our customers always comment on the quality of the boxes in which we store our gems and diamonds.

The best for business 👍 highly recommend

Michael - Los Angeles CA ( Diamond Dealer)
Superior Diamond Boxes in Leather Zip Case - Secure and Stylish Storage DK21664-24ZP
Superior Diamond Boxes in Leather Zip Case - Secure and Stylish Storage DK21664-24ZP
great quality, well done

amazing quality this time around, I can tell that you guys really made sure the quality was on the point this time. thank you for taking the time to ensure the quality

James Carter
Diamond Boxes in a Luxurious Lockable Carry Case with viewing window DK21663-20W
Diamond Boxes in a Luxurious Lockable Carry Case with viewing window DK21663-20W