High Precision Jewelry Diamond Tester, Diamond Moissanite Tester with Pointer Board and Indicator Light, Automatic Calibration, Gemstone Tester with Professional

Retractable thermoelectric probe tip ensures constant pressure between probe and stone Probe tip (0.6mm) for testing gemstones as small as 0.02ct Metal alarm buzzer ensures probe tip is in contact with gemstone during testing Clear and easy-to-read analog dial Can identify 16 kinds of gemstones Built-in glass and calibration test disk (CAL) for reference Specification: Power supply method: Use 2 AA batteries or adapter (batteries not included). size: Length: 125 mm (4.93 in) Width: 90mm (3.55 in) Height: 70mm (2.76 in) Products include: 1 x gem diamond tester

• Diamond Tester:Adopts auxiliary thermal calibration technology to help you quickly identify diamonds and moissanite from other fake gemstones. Retractable probe tip measures weights as small as 0.02 carats. Allows for faster testing and fast results.
• Easy to use:The analog dial is clear and easy to read; 16 kinds of gemstones can be distinguished.
• Retractable Probe Tip:The gem tester adopts a retractable probe tip, which has been redesigned to be more compact, sturdy and portable.
• Automatic Calibration:The perfect tool to quickly and accurately test the purity and authenticity of precious metals. It gives you instant results without waiting between tests, so you can easily and quickly evaluate your projects anytime, anywhere.
• Wide Application:It is also a tool to test and accurately detect and analyze jewelry when you go to garage sales, flea markets, swap meets to sell diamonds, moissanite, stamps, jewelry or for classroom assessments, education, etc.