Features 1、The diamond tester is a portable electronic device, the material of the product is ABS 2、Jewelry identification tool is used to distinguish real diamonds from other simulated diamonds 3、Use voice commands to make an audible sound when the light is on, suitable for identification assistance 4、The second-generation thermal conductivity meter drill pen can quickly, accurately and safely test diamonds 5、Diamond Identification Equipment is a tool for detecting the authenticity of diamonds and jade crystals Specification Item Type: Diamond Tester Product Material: ABS Product Type: Identification Test Purpose: To Identify the Authenticity of Diamonds and the Hardness of Some Gems Battery: 9V 6F22 Square Battery (Without Battery) Package List 1 x Diamond Identification Equipment 1 x Leather Case 1 x Aluminum Sheet 1 x User Manual