AAA Grade CZ:
AAA Grade CZ is a manmade stone, in which its refractive index, dispersion and hardness is extremely close to those of a natural diamond. It also creates more flashes of color, giving it a fiery and brilliant appearance.
Bronzite is a member of the pyroxene group of minerals, belonging with enstatite and hypersthene to the orthorhombic series of the group. The color of bronzite is green or brown; its specific gravity is about 3.3–3.4, varying with the amount of iron present. The refractive indices and optic angle increase with iron content. Bronzite is sometimes cut and polished, usually in convex forms, for small ornamental objects. It often has a more-or-less distinct fibrous structure, and when this is pronounced the sheen has a certain resemblance to that of cats-eye.