What Is Cubic Zirconia or CZ?
Cubic zirconia or CZ is the crystalline manmade form of zirconium dioxide, ZnO2. Zirconium dioxide is also known as zirconia. Ordinarily, zirconia would form monoclinic crystals. A stabilizer (yttrium oxide or calcium oxide) is added to cause zirconia to form cubic crystals, hence the name cubic zirconia.