What's the Moissanite? Moissanite has the chemical formula SiC and is a rare mineral. Because of its hardness, it can be used in high-pressure experiments, as a replacement for diamond. Since large diamonds are usually too high in cost to be used as anvils, synthetic moissanite is more often used in large-volume experiments. Best Choice for the Jewelry Making The moissanite is the best replacement for the diamond, if you like the dazzling jewelry and jewellry making, this is a must for you to buy. It is perfect for pendant, stud, engagement ring, wedding ring or promise ring. Great Jewelry Gift as Moissanite Necklace and Ring Moissanite necklace bracelet and ring will be perfect gifts for girlfriend, wife, sister, daughter, mom, bridesmaid, and friends on graduation, birthday, Mother's Day, Christmas, Valentines Day and Wedding Anniversary. Product Size: 0.3ct=4mm, 0.4ct=4.5mm, 0.5ct=5mm, 0.6ct=5.5mm, 0.8ct=6mm, 1ct=6.5mm, 1.2ct=7mm, 1.5ct=7.5mm, 2ct=8mm, 2.5ct=8.5mm, 3ct=9mm, 4ct=10cm, 5ct=11mm Product Features 1.Moissanite can be used as a raw material for engagement ring, a pair of stud earrings and a necklace. 2.Moissanite can pass through the diamond test pen. 3.Professional cutting maximizes the reflective brilliance of the moissanite which makes its reflective index higher than the diamond. Specification: Stone: Created Moissanite Shape: Round Color: D color Clarity: VVS1 Cut: Excellent Cut Polish: Excellent Symmetry: Excellent Package Content: 1 x Moissanite Stone 1 x Jewelry Box