just need 3-7 business days to US This diamond selector/tester has a highly compact design and will help you to tell the difference between a genuine diamond and fake diamond. The cost is not even a fraction of the cost of a diamond， and you will gain piece of mind by knowing that you are buying a real diamond， instead of a cheap knockoff. This tester comes with a leather bag and small testing tray for holding loose stonesFeatures:* 100% brand new* Easy to use even for a new beginner* Emit audible sounds to give accurate reading* Diamond indicator will be showed if the stone is a REAL diamond (Green light)* Metal alert (continuous buzzing sound when user accidentally touches metal rather than stone)* Large / small switch for testing diamonds +/ - 8 points* To emit sounds to give accurate reading* LCD display & LED indicator* If stone is Fake crystal， a stimulant such as cubic zirconium (CZ)， will be no reaction* Dimension: 16.5 x 4.0 x 2.2cm* Powered by DC 9V battery x 1 (Battery Included)Package Includes:1 x Diamond Selector II Tester1 x English User Manual1 x Protected leather bag