Diamond Tester Pen Portable Gem Selector Jeweler Tool for Stones and Jewelry
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Tell Real From Fake In Seconds — Portable Diamond Tester Pen for Gems, Stones and Jewelry Authentication
Spot real diamonds from imitations on the spot with the Jowsie Diamond Tester Pen — a portable, battery-powered gem testing tool that uses thermal conductivity to identify diamonds vs glass, cubic zirconia, and other simulants. Press the probe against the stone, watch the indicator, and know immediately. A must-have for jewelers, pawn shops, gem collectors, and savvy shoppers at estate sales.
Why You'll Love This Diamond Tester
- Instant Authentication: Identifies real diamonds in seconds.
- Thermal Conductivity: Detects diamonds vs glass, CZ, and other simulants.
- Portable Pen Design: Pocket-sized for jewelry shows, estate sales, and pawn shops.
- Battery Powered: Ready to use anywhere — no plug required.
- Audible & Visual Indicator: Beep + light tells you when a stone is diamond.
- Easy To Use: Beginner-friendly with no special training.
Specifications
- Product type: Diamond / Gem Tester Pen
- Method: Thermal conductivity
- Power: Battery
- Indicators: Audible beep + visual light
- Use: Loose stones and set jewelry
What's in the Box
- 1 x Diamond Tester Pen
- 1 x Battery
- 1 x User Manual
FAQs
Q: Can it distinguish diamond from moissanite?
A: Basic thermal testers may read both as diamond — a combination diamond/moissanite tester is needed to tell them apart.
Q: Does it work on set jewelry?
A: Yes — works on rings, earrings, and pendants if you can press the probe firmly on the stone.
Q: Does it test colored gemstones?
A: It's primarily designed for diamond authentication. Colored gem identification requires specialized testers.
