... 8, specific gravity 4.6-4.71, 1.93-2.01 refra Country of Origin: Australia, Indonesia, South Africa ... TiO2≤0.10%≤0.10%≤0.20%≤0.30% 2. Introduction Pure zircon sand is usually colorless and transparent ... 8, specific gravity 4.6-4.71, 1.93-2.01 refractive index, birefringence, absorb light directly; magnetic susceptibility ... , potassium, zirconium sulfate, etc.). High quality Zirconium Sand with best price