... .8, specific gravity 4.6-4.71, 1.93-2.01 refra Country of Origin: Australia, Indonesia, South Africa etc Specification ... .8, specific gravity 4.6-4.71, 1.93-2.01 refractive index, birefringence, absorb light directly; magnetic susceptibility low, non ... dioxide, zirconium oxychloride, zirconium, sodium fluorozirconate, potassium, zirconium sulfate, etc.). High quality Zirconium Sand with best price