Moissanite is a near-colorless gemstone that's composed of silicon carbide. First discovered by Henri Moissan, a French scientist, moissanite was originally found in the crater left behind by a fallen meteor. ... Although it's made to seem like diamonds, moissanite varies from diamond in both composition and in appearanceMoissanite has a hardness of 9.25 on the MOHs scale, which means that it will withstand the daily rigors your jewelry endures. This makes it harder than any other white gemstone used in jewelry makingDiamond's refractive index caps out at around 2.42. Moissanite, however, caps out at 2.65. This means that they are shinier and more refractive of light than diamonds.This jewelry is for adults only and not intended for children 12 and under. It is safe to wear but not for any oral use.