Test Diamond, Moissanite, White Sapphire Gemstone | Precision Tool with Expert Professional Reading & Accuracy. Can be powered by 3 AAA batteries or USB cord. USED FOR STONE IDENTIFICATION: This new enhanced testing technology is a breakthrough in the identification, detection, and separation of diamonds from other materials such as CZ, moissanite, and white sapphire. This technology has the capability to identify stones with low conductivity, allowing accurate detection and separation of diamonds from other materials. It evaluates stones using cutting-edge scanning techniques and advanced software analysis, ensuring a highly accurate test result. ALLOWS LED STONE ILLUMINATION & DETECTION: This is a high-performance diamond tester with LED stone illumination and UV fluorescence detection. It uses a unique retractable probe tip that is designed for enhanced durability. The LED stone illumination will help you see the subtle nuances of the diamond, such as clarity, while the UV fluorescence detection allows you to detect any potential diamond treatments. This is the perfect tool for diamond grading, authentication, and identification.