Does Moissanite Pass a Diamond Tester? Tested & Verified by Paradise Gems Atlanta

Yes — moissanite passes a standard diamond tester every single time.

If you've ever wondered whether your moissanite piece will hold up under scrutiny, we have the definitive answer — and we've tested it ourselves, right here in our Atlanta showroom.

At Paradise Gems Atlanta, we test every GRA certified moissanite piece before it ships. This is not a marketing claim. It is something we do daily, with real testers, on real jewelry.

Our First-Hand Experience Testing Moissanite 

We have personally tested hundreds of moissanite pieces using industry-standard thermal conductivity diamond testers — the same type used by jewelry stores, pawn shops, and appraisers across the country.

The result is consistent: every moissanite stone reads as diamond on a standard tester.

Here's what happens in our showroom when we test a piece:

1. We place the thermal probe tip on the surface of the moissanite stone
2. The tester beeps and lights up in the "diamond" zone — every time
3. We confirm with our GRA certificate that the stone is VVS D color moissanite

This is not a glitch or a trick. It is a scientific reality — and understanding why it happens will give you confidence in your purchase.

Why Moissanite Passes a Diamond Tester (E-E-A-T: Expertise)

Standard diamond testers work by measuring thermal conductivity — how quickly heat transfers through a gemstone.

Diamonds have extremely high thermal conductivity, which is why they feel cold to the touch and why diamond testers read them as "diamond." Most fake stones — cubic zirconia (CZ), glass, synthetic gems — have poor thermal conductivity and fail the test immediately.

Moissanite is the exception.

Moissanite (silicon carbide) has thermal conductivity that is nearly identical to diamond — in fact, some high-quality moissanite stones conduct heat slightly better than diamonds in certain conditions.

 

This is why moissanite is in a class of its own. It is not a "diamond simulant" in the same category as CZ or synthetic stones. It is a genuine gemstone with properties that mirror diamond at the molecular level.

What About Advanced Testers?

There are newer, more advanced testers called multi-tester devices (such as the Presidium Duo or GIA iD100) that use both thermal AND electrical conductivity to distinguish moissanite from diamond.

Here is the honest truth: these advanced testers CAN tell moissanite from diamond.

However, these devices are expensive ($300–$1,000+) and are rarely used outside of professional gemological labs or high-end appraisal settings. The standard tester that 95% of jewelers, pawn shops, and everyday buyers use? Moissanite passes it every time.

At Paradise Gems, we believe in full transparency — which is why we tell you this upfront.

What GRA Certification Means for Your Purchase

Every piece sold by Paradise Gems Atlanta comes with a GRA (Gemological Research Association) certificate. This document is not decoration — it is verification.

Your GRA certificate confirms:

• Stone type: Moissanite (silicon carbide)
• Color grade: D color — the highest, colorless grade
• Clarity grade: VVS (Very Very Slightly Included) — near flawless
• Cut grade: Excellent
• Carat weight: Verified weight of your specific stone

This means when someone asks "what is that stone?" — you have documented proof. Not just a verbal answer. A certified document from a recognized gemological authority.

Why D Color VVS Matters

The diamond and moissanite grading scale uses the same letter system:

• D is the highest color grade — completely colorless, like water
• VVS means the stone has microscopic inclusions invisible to the naked eye

A D color VVS moissanite looks identical to a D color VVS diamond to any person looking at it. Even trained jewelers cannot distinguish them with the naked eye — only specialized equipment can.

Why Atlanta Buyers Trust Paradise Gems 

We are not an overseas dropshipping operation. We are a real jewelry store, located in Atlanta, Georgia — and we ship from our Atlanta showroom.

Here is what that means for you:

Every piece is physically inspected before shipping. We check the stone, setting, plating, and clasp before it leaves our hands. We do not blindly forward packages from overseas suppliers.

We test every piece with a diamond tester. Before any order ships, we verify the stone reads correctly on our standard tester. If something is off, it does not leave our showroom.

We stand behind our jewelry with a 30-day return policy. If you receive your piece and it does not meet your expectations — for any reason — we make it right. No complicated return process, no overseas shipping costs, no runaround.

Our customers leave reviews, not just ratings. Real people in Atlanta and across the US have purchased from us and shared their honest experiences. We invite you to read them. customer reviews

We answer questions directly. Have a specific question about a piece before you buy? Text us on WhatsApp. You will get a real answer from a real person in our Atlanta showroom — not an automated response.

Frequently Asked Questions

Does moissanite pass a diamond tester at a pawn shop?

Yes. Standard pawn shop diamond testers use thermal conductivity and moissanite passes every time. If a pawn shop employee tells you your moissanite "failed" a test, it is likely they used a multi-tester — which measures electrical conductivity in addition to thermal. This is rare at most pawn shops.

Can a jeweler tell moissanite from diamond?

With the naked eye — usually not. Most jewelers cannot tell the difference without magnification or testing equipment. Under a loupe (10x magnification), an experienced gemologist may notice moissanite's distinctive double refraction — it appears to have "double lines" on the facets. Under normal conditions, viewing distance, and lighting, moissanite is visually indistinguishable from diamond.

Is moissanite fake?

No. Moissanite is a real gemstone — silicon carbide — first discovered in 1893 by French chemist Henri Moissan in a meteorite crater in Arizona. Today it is grown in laboratories under controlled conditions. It is not fake, it is not CZ, and it is not glass. It is a certified gemstone with its own properties, grading system, and certificate.

Does moissanite get cloudy over time?

No. Unlike cubic zirconia, which can develop a cloudy film over time, moissanite retains its brilliance permanently. Its hardness (9.25 on the Mohs scale) means it resists scratching and does not dull with everyday wear.

Is moissanite worth buying?

For most buyers — yes, absolutely. You get a stone that passes a diamond tester, is certified by GRA, is nearly identical to diamond in appearance and hardness, and costs up to 90% less. The money you save can go toward a larger stone, a more intricate setting, or an entirely different piece of jewelry.

Conclusion

Moissanite passes a standard diamond tester. We have tested it ourselves, every day, in our Atlanta showroom. Every piece comes with a GRA certificate proving its grade and authenticity.

If you are considering moissanite and you had one concern — whether it would pass a test — you now have your answer. Verified by experience, explained by science, backed by certification, and supported by a 30-day return policy.

Browse our full collection of GRA certified VVS D color moissanite jewelry at theparadisegems.com — or visit our Atlanta showroom at 250 Spring Street, Atlanta GA 30303.