Jewelry Diamond Tester, Diamond Moissanite Tester, Built-in Glass and Calibration (Cal) Test Disk, for Identifying Diamonds

Retractable thermoelectric probe tip ensures constant pressure between probe and stone Metal alarm buzzer ensures probe tip is in contact with the stone during testing Built-in glass and calibration (CAL) test disk for reference Probe tip (0.6mm) for testing stones as small as 0.02ct Can distinguish 16 kinds of gemstones Clear and easy-to-read analog dial Specification: 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

• Thinnest Retractable Probe Tip】With retractable probe tip. The gemstone tester has been redesigned to be more compact, robust and portable.
• Simple And Easy To Use】Clear and easy-to-read analogue dial; can distinguish 16 types of gemstones.
• Includes Supported Thermal Calibration】Calibrate your device now easily for your test environment.
• Fast And Safe】This diamond selection tester is designed for fast, precise and safe diamond testing. No harm to diamonds.
• SERVICE:We attach great importance to our customers' shopping experience. If you have any questions, please feel free to contact us, we will reply you as soon as possible within 24 hours