Posted by Teddy Jc
on January 12, 2026
You’re about to drop some cash on a new chain or a custom pendant, and you have one big question keeping you up at night: Will this pass the diamond tester?
Nobody wants to be that guy—the one who gets called out for wearing "fake" jewelry in front of the crew. You want the shine, the respect, and the "BEEP" from the tester, but you don't want to spend $50,000 on a natural diamond.
We’re going to keep it 100% real with you. No scientific jargon, just the facts you need to know before you buy.
The Short Answer: YES, It Passes.
If you walk into a party, a pawn shop, or meet a friend with a standard handheld diamond tester (the kind you see on Amazon or TikTok for $20), high-quality Moissanite will pass as a diamond 99% of the time.
Don't just take our word for it. Watch us test our VVS Moissanite right here:
Why Does Moissanite Trick the Tester? (The Secret)
Most people think diamond testers are magic. They aren't.
The standard "Diamond Pen" (Thermal Tester) measures one thing: Heat.
- Glass/CZ: Traps heat (The tester stays silent ❌).
- Diamond: Conducts heat instantly (The tester beeps ✅).
Here is the kicker: Moissanite is extremely similar to Diamond. It is one of the best heat conductors on earth. Because it moves heat almost exactly like a natural diamond, the machine gets "confused" and tells you it's the real deal.
| Stone | Thermal Conductivity | Passes Standard Tester? |
|---|---|---|
| Natural Diamond | Excellent | ✅ YES |
| Moissanite | Excellent | ✅ YES |
| Cubic Zirconia (CZ) | Poor | ❌ NO |
The "Gotcha": When Does It Fail?
We promised to be honest. Is there a machine that can tell the difference? Yes.
While the standard "heat" testers (used by 90% of people) will say it's a diamond, professional jewelers might have a more expensive gadget called an Electrical Conductivity Tester.
- How it works: Diamonds usually don't conduct electricity. Moissanite does (a little bit).
- The Result: If a jeweler uses a $300+ multi-tester, it might show "Moissanite" on the screen.
Moissanite vs. Diamond: The "Eye Test"
Forget the machines for a second. How does it look on your neck?
Actually, Moissanite hits harder than diamond. It has a higher Refractive Index (2.65 vs. 2.42). That’s just a fancy way of saying it sparkles more.
- Diamond: Reflects white light (Classic shine).
- Moissanite: Reflects rainbow colors (The "Fire" effect). Under club lights or sunlight, Moissanite goes crazy .
Don't Get Scammed: Moissanite vs. CZ
This is the most important part. Moissanite passes the tester. Cubic Zirconia (CZ) does NOT.
If you buy a cheap "iced out" chain for $50, it’s likely CZ. Within a month, it will turn cloudy, stop shining, and fail every tester in existence. That is embarrassing.
Moissanite is a forever stone. It scores a 9.25 on the hardness scale (Diamond is 10). You can wear it in the shower, scratch it against a door, or wear it every day—it will never lose its shine.
The Verdict: Should You Buy It?
If you want the look, the feel, and the "Pass" on the tester without dropping the price of a small house, Moissanite is the cheat code.
It’s not about "faking it." It’s about being smart with your money. Even rappers and celebs are mixing Moissanite into their collections now because it just makes sense.
Ready to upgrade your ice game?
All our jewelry is made with VVS Clarity Moissanite that is guaranteed to pass the standard thermal diamond tester.
