Zirconia, also known as zirconium dioxide, is a white solid used in ceramic glazes and refractory coatings, as a synthetic substitute for diamonds .Zirconia is widely used in jewelry as a substitute for diamond.Cubic zirconia has near-identical properties to diamond in terms of brilliance, refraction, and durability, and even the most experienced jeweler can have difficulty telling them apart. This simply beautiful zirconia ring is beautiful in look and is a perfect piece of artistry .