Zirconia

Zirconia (ZrO₂) is a white crystalline oxide of zirconium that is used in refractories, in insulation, abrasives, enamels and glazes.

It is a a white powder and possesses both acid and basic properties. On account of its infusibility, and brilliant luminosity when incandescent it is used as an ingredient of sticks for the Drummomd light[?].