Gemoro Testerossa Diamond, Moissanite & White Sapphire Tester Identifies, detects and separates diamond from CZ, moissanite and white sapphire with New Enhanced M New Enhanced Moissanite Testing Technology for low conductivity stone identification LED stone illumination and UV fluorescence detection,Retractable probe tip with enhanced durability Powered by MICRO USB or with its included rechargeable NiMH batteries, or your AAA Akaline Batteries Unprecedented 10-YEAR PROBE TIP WARRANTY; Lifetime Limited Replacement Warranty on the tester