Fangrui Product Details [easy To Use]: Real Diamond Will Emits Sounds And Lights Greater Than Equal 9 Grid [intuitive Design]: Fake Crystal, Such As Cubic Zirconium ( Cz ), Crystal, Glass Will Be No Sounds And Lights Less Than 9 Grid [fast And Safe ]: This Diamond Selector Tester Designed For Quick, Precise, And Safe Diamond Testing. No Harm To Diamonds. [magnification]: 60x Led Magnification With Batteries ( Small Microscope ). For Gems, Coins, Antiques, Stamps, Reading, Inspection Etc. Colour:black Material:plastic Due To Different Batches, There May Be Differences In Product Appearance And Printed Text, Which Will Not Affect Use Package Contents: 1 X Diamond Tester Pen 1 X 60x Mini Led Magnifying 1 X 9v Battery(note: Random Color, Dont Accept The Specified Color.) 1 X Protect Case 1 X Test Bench Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is