Feature:1. FAST AND SAFE: The professional diamond selector will indicate real or fake diamond. Designed for fast, accurate and safe diamond testing2. INTUITIVE DESIGN: Possess LCD display and LED indicators. Test diamond with a size switch, make a sound, and easily distinguish readings3. EASY TO USE: The diamond test pen is easy to operate to get results, no professional required. Just turn on the detector, place the tip of the diamond tester on the gemstone (press lightly), the tester will not beep if the gemstone is fake, crystal or cubic zirconia4. EASY IDENTIFICATION: A real diamond will sound and light equal to or more than 9. Imitation crystal, such as cubic zirconium (CZ), crystal, glass will be silent less than 95. 30X Magnification: 30X LED magnification with battery(miniature microscope) is great for gemstone, coins, antiques, stamps, reading, checking and moreSpecification:Item Type: Diamond SelectorMaterial: ABSPurpose: To identify the authenticity of diamond and the hardness of some gemstonePower Supply: 1 x 9V 6F22 dry battery(not included).Package List:1 x Diamond Selector1 x Masonry Holder1 x User Manual1 x Storage Bag1 x Magnifying Glass1 x Storage BoxNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.