Moissanite Moe · Nov 11, 2026 · 2 min read
Why Cheap Iced-Out Jewelry Fails the Diamond Tester
Cheap iced-out jewelry fails the tester because the stones are cubic zirconia (CZ) or glass, not diamond or moissanite. A standard diamond tester measures how fast a stone moves heat. CZ and glass move heat slowly, so the tester stays silent. Moissanite moves heat like diamond, so it passes.
What's actually in most iced-out jewelry?
Most iced-out chains, pendants and earrings sold cheap online are set with CZ (cubic zirconia) or glass. They look bright for the photo. They fail the moment someone tests them.
How does a diamond tester catch it?
The tester heats a tip, touches the stone, and measures how fast heat leaves. Diamond moves heat extremely fast. Moissanite does too. CZ and glass don't. Full explanation: Does moissanite pass a diamond tester?
What else goes wrong with cheap iced-out pieces?
- Stones are glued, not set, so they fall out.
- The base is brass, which turns skin green once the plating wears.
- CZ scratches and clouds within months.
How do you spot it before you buy?
- The listing never names the stone, or says "simulated diamond" or "AAA CZ."
- No metal is listed, or it says "alloy."
- No video of the piece on a tester.
- The price is too low for real stones on real silver.
What should you buy instead?
Moissanite on 925 sterling silver. It passes the tester, stays clear, and the base won't turn green. That's all we make.
FAQ
Will a pawn shop test my chain?
Most will, with a pen tester. Moissanite passes it. CZ doesn't.
Is "VVS" on a cheap listing real?
Often it's describing CZ. Check that the stone is named as moissanite or diamond.
Why does my iced-out chain look cloudy?
CZ scratches and clouds over time. Moissanite doesn't.
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