Zirconium Oxide ( ZrO2 ) Serious Quality Control Competitive price Delivery at the soonest Fine ceramics, jewelry, etc Zirconium oxide ( ZrO2 )Zirconia (also known as zirconium oxide or as zirconic anhydride, ZrO2 ): toxic, heavy white powder that is insoluble in water, soluble in mineral acids; melts at 2700°C; used in ceramic glazes, special glasses, as an abrasive, a refractory material, and a ...