Since Moissanite is built of carbide silicone, moissanite gems are very tough and robust. Although the diamond is the only stone that is tougher than moissanite, both have equal toughness and are immune to cracking or scraping. Custom made Moissanite rings, made to order and a wide selection best moissanite engagement rings are sold by Diamondrensu. Contact them now for great offers.