Cubic zirconia (CZ) is the cubic crystalline form of zirconium dioxide (ZrO). Moissanite is somewhat harder than common cubic zirconia. Zircon (ZrSiO) and the cubic zirconia (ZrO) are cut into gemstones for use in jewelry. Yttria stabilizes the cubic form of zirconia in jewelry. There are many formulations of stabilized cubic zirconia. The most common oxide is zirconium dioxide, ZrO, also known as "zirconia". They digitally scan the necklace to manufacture a worthless cubic zirconia replica. Hathaway's tiara was considerably less expensive, consisting of cubic zirconia as opposed to authentic jewels. These sheets are available in various materials such as alumina, zirconia and magnesia. Insulating refractories include calcium silicate materials, kaolin, and zirconia. Bulk filler is composed of non-agglomerated silica and zirconia particles. These sheets are available in various materials such as alumina, zirconia, and magnesia. Ceramics such as alumina, zirconia, and especially magnesia will tolerate the highest temperatures. Many transition metal oxides are acidic, including titania, zirconia, and niobia. Since then he created and played with Fools Gold recording artists Cubic Zirconia (2009).