Product Features: - Moissanite can be used as a raw material for engagement ring, a pair of stud earrings and a necklace. - Moissanite can pass the diamond test and each one owns an authoritative certificate. - Professional cutting maximizes the reflective brilliance of the moissanite which makes its reflective index higher than the diamond. Product Standard: 1ct=6.5mm, 1.2ct=7.0mm, 1.5ct=7.5mm, 2ct=8.0mm, 2.5ct=8.5mm, 3ct=9.0mm, 3.5ct=9.5mm, 4ct=10.0mm, 4.5ct=10.5mm, 5ct=11.0mm, 6ct=12.0mm Trust Us to Protect You: We protect consumers by providing expert, third-party evaluation of a moissanite's quality characteristics. Our Moissanite Grading reports help you to make an informed purchase when choosing a moissanite. We know it's a big investment and we want you to feel confident and secure when you Buy moissanite jewelry.