... . Gemstones Specification Material:Cubic Zirconia(aka CZ), Corundum, Ruby, Sapphire, Spinel, Glass, K9Shape:Round, marquise, octagon, BAG, pear, oval, heart, square, pear etc ... cut, Fancy cut, Princess cut, Rose cut, Emerald cutCheckerboard cut, Cabochon cut. Millennium cut, Concave cut.Customized cutting is welcome.CZ Gemstone IntroductionCubic zirconia (or CZ) is the cubic crystalline form of ...