Moissanite earrings in solid 14k gold and platinum. Moissanite is a lab-grown stone (silicon carbide), a Mohs 9.25, that throws even more fire than a diamond, which makes it a bright, brilliant diamond alternative at a small fraction of the price. The collection runs from 3 and 5 mm round studs to trillion, rose-cut and cabochon cuts and oval, cushion and round diamond-halo studs set with natural diamonds. Moissanite is not a diamond; it is its own stone, and every pair is made to order and ships fully insured.