Product Description
Huge cubic zirconia solitaire cocktail ring. Top is 15 mm across. Size 5 and 1/2. Cubic zirconia is a man made gemstone that was used in jewelry in the late 1970's. A patent in the 1960's was applied for the Process for the production of Cubic Crystalline Zirconia. There is a naturally occuring Cubic zirconia that was believed to be discovered in the late 1800's; but the natural version is very rare.
