... of XDGems are waiting for you. Gemstones Specification Material:Cubic Zirconia(aka CZ), Corundum, Ruby, Sapphire, Spinel, Glass, ... visit our website.Customized shape is welcome.Size:1mm-180mmColor:white, black, pink, garnet, amethyst, blue, brown, green, ... and economically important competitor for diamonds since 1976. Cubic zirconia is crystallographically isometric, an important attribute of a ...