Description: 【High Precision Diamond Tester】: This professional diamond selector allows you to accurately identify diamond and moissanite. 【Easy to Use】: This Diamond Tester is designed for easy to operate, Simply turn on the unit with the adjustment knob, and put the head vertically aligned with the test object. 【Material】: Made of quality PP material, this diamond tester is sturdy enough to withstand regular use while maintaining its accuracy. 【Product Dimensions】: The diamond tester pen measures 165*50mm in size making it compact enough for easy storage or transport. 【Essential Tool】: The diamond selector is suitable for buying jewelry, trading diamonds, auctions, enthusiasts to verify the authenticity of their precious stones. Specification: Material: PP Size Chart: 16.5cmx5cm/6.50inchx1.97inch Package Includes: 1 Piece Diamond Tester Pen Note: Please allow slightly errors 1-2cm differences due to manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store