Does Moissanite Pass a Diamond Tester?

Does Moissanite Pass a Diamond Tester?

If you’ve ever wondered, does moissanite pass diamond tester evaluations, you’re not alone. This dazzling gemstone often confuses even the most reliable testers. In this article, we’ll explore why moissanite often triggers a positive diamond reading, how diamond testers work, and how to confidently tell the difference between the two.

Why Moissanite Often Passes a Diamond Tester

Most standard diamond testers measure a gemstone's thermal conductivity. Diamonds conduct heat exceptionally well—and so does moissanite. Because of their similar thermal profiles, moissanite often registers as a diamond on these devices.

That’s why many jewelers use advanced testers that also check for electrical conductivity, where moissanite and diamonds perform differently.

How Diamond Testers Work

Diamond testers typically fall into two categories:

• Thermal Conductivity Testers – Measure how fast heat moves through the gem. Moissanite usually passes this test.
• Dual Testers – Combine thermal and electrical conductivity. These can correctly identify moissanite as a different gem.

So while your moissanite might pass a basic test, it will likely be caught with a more advanced model.

Practical Tips to Identify Moissanite

If you're buying or testing jewelry, here’s how you can spot moissanite:

• Look for a double refraction under magnification (moissanite shows a "double image").
• Check for telltale rainbow flashes—moissanite reflects more color than diamond.
• Use a dual-mode diamond tester for better accuracy.

Expert Tip: Trust Your Source

Whether you're buying a diamond or a moissanite ring, the best way to ensure authenticity is to shop with a trusted retailer. Certificates, return policies, and transparent descriptions matter.

✨ Shop Moissanite Favorites:

• Oval Cut Moissanite Engagement Ring
• Solitaire Moissanite Necklace
• Classic Moissanite Stud Earrings

For a deeper scientific dive, check out the Gemological Institute of America’s article on moissanite.

🙋‍♂️ Frequently Asked Questions

Does moissanite show up as a diamond on all testers?

Moissanite usually shows up as a diamond on thermal testers but not on dual testers that include electrical conductivity checks.

Can jewelers tell moissanite from diamond?

Yes, experienced jewelers use specialized tools and magnification to spot differences between moissanite and diamonds.

Is moissanite worth buying?

Absolutely. Moissanite offers brilliant sparkle, durability, and an ethical, affordable alternative to diamonds.

Does moissanite lose its sparkle over time?

No. Moissanite maintains its brilliance and doesn't get cloudy, making it a lasting choice.

Can moissanite be certified?

Yes, many reputable retailers offer certification for moissanite, confirming its quality and origin.

Final Thoughts: Trust What You Love

While moissanite may pass a basic diamond tester, it’s no imposter—it’s a gemstone worthy of admiration on its own. Explore our full collection of moissanite jewelry to find a piece that sparkles with confidence.