[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.<br><br>Colour:black Material:plastic Due to different batches, there may be differences in product appearance and printed text, which will not affect use<br><br>Package Contents: 1 x Diamond Tester Pen 1 x 60X Mini LED Magnifying 1 x 9V battery(Note: Random color, don't accept the specified color.) 1 x Protect case 1 x Test bench<br><br>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 +/- 1-3cm.