Gem Tester Diamond Kit Jewelry Gemstone Tester Thermal Conductivity Meter High Accuracy Pen Selector Diamond Detector Precious Metal

Features: 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 product information Power supply method: Use 2 AA batteries or adapter (batteries not included). size: Length: 125 mm (4.93 inches) Width: 90mm (3.55 inches) Height: 70mm (2.76 inches) Products include: 1 x gem diamond tester

• Used to test and measure diamonds and gemstones, suitable for gem industry, academic institutions, jewelry manufacturers, diamond appraisal companies and retail jewelers.
• The gemstone tester uses the principle of thermal conductivity to help distinguish diamonds and other imitations. It features a clear and easy-to-read analog dial to help users distinguish 16 common gemstones.
• The retractable thermoelectric probe head ensures that the pressure between the probe head and the gemstone remains constant. The probe head (0.6 mm) can be used to detect diamonds as small as 0.02 carats.
• The metal alarm buzzer ensures that the probe head maintains contact with the bud during the test. You always get consistent, reliable, easy-to-use test results.
• Built-in glass and calibration test disc (CAL) for easy thermal calibration.