Cubic Zirconia, a.k.a. CZ, is the cubic crystalline form of zirconium dioxide. The natural form of a yellowish monoclinic baddeleyite (zirconium oxide) was discovered in 1892. It is a mineral that is widely synthesized for use as a diamond simulant. It is hard, optically flawless and usually colorless. It is now made in a variety of colors.
Citrine Yellow, Medium to Dark Orangey-Yellow, Good Cut, Good Polish, Good Brilliance, Man-made.
