Both, ALTR Created Diamonds and gem quality earth-mined diamonds are composed of incredibly pure crystal carbon as a single crystal. Simulants may look somewhat similar but the material is completely different. with different physical properties. An ALTR Created Diamond’s refraction and hardness is identical to a natural diamond’s, unlike a simulant, which fails to meet the standards. An ALTR Created Diamond is a real diamond unlike diamond-like materials such as cubic zirconium, moissanite and diamond-coated materials, with a wide range of color, clarity, carat and cut possibilities.