YoiYee Updated Diamond Jewelry Tester Selector II Gemstone Test Pen Tool, High Accuracy Thermal Conductivity Meter for Loose Stones and Mounted Jewelry, Portable Electronic Diamond Detector Kit

• Accurate Testing - Select real diamonds accurately and conveniently. This updated tester measures thermal conductivity to distinguish genuine stones from stimulants as small as 0.05ct.
• Power and Platform - Powered by a single 9V battery (not included). Includes a dedicated testing platform for loose stone testing, ensuring stable and accurate readings.
• Portable Design - Test anytime, anywhere. The compact, lightweight design makes it suitable for use at home, in the office, or on the road for quick gemstone verification.
• Specifications - Measures 16.20 x 4.01 x 2.14cm and weighs 59g. Operates effectively in temperatures from 5°C to 35°C and humidity between 30% and 80%.
• Package Contents - You will get 1x diamond tester, 1x diamond testing platform, and 1x vinyl case cover. A detailed electric user manual is provided for guidance.

This updated Diamond Tester accurately measures the thermal conductivity of gemstones to identify whether they are diamonds or diamond stimulants. It features a level meter volume for easy calibration based on different stone sizes. The device can distinguish stones as small as 0.05ct. Specifications Item size: 16.20 x 4.01 x 2.14cm (6.38 x 1.58 x 0.84 in) Item weight: 59g / 2.08 oz (device without battery) Application: test gemstone greater than 0.05Ct Battery Required: 1x 9V Working temperature: 5°C - 35°C (41°F - 95°F) Working Humidity: 30% - 80% Works Great For Verifying loose gemstones on the provided testing platform and checking mounted jewelry in various settings like home or office. Pro Tip When performing the testing, do not wear gloves; place your bare finger on the metal on the back of the tester for accurate results. Package 1x diamond tester, 1x diamond testing platform, 1x vinyl case cover.