Diamond and moissanite tester with white sapphire indication. Identifies, detects, and separates diamond from CZ and moissanite. The patented GemOro UltraTester 3+ features features new and exclusive UV-F1 moissanite identification technology. Capable of detecting the widest range of the electrically conductive moissanite, including the new super-low electrically conductive Forever One moissanite. The UltraTester 3+, testarossa, and PRO-M 3 are exclusively recommended by Charles & Colvard.