This diamond tester features a highly compact design which is perfect to carry with when shopping for diamonds. This diamond tester will indicate the result whether your diamond is genuine or fake. You can know the data of the diamond instead of knockoff. It comes with a leather bag and a testing tray for holding loose stones. Feature - Color: Black- Material: Plastic and metal- Size: 160x40x22mm/6.3x1.6x0.9inch- The reading is quite easy to read with the scale.- Volume is adjustable by the volume pully.- It emits different sounds to easily distinguish the readings.- Operated by 9V battery(not included)- The tested diamond or jewlery must be clean and dry.Packing list: 1 x Diamond Tester1 x Bag1 x Testing Tray