... usually colorless and transparent crystal state, 2.hardness 7.8, specific gravity 4.6-4.71, ... of Origin: Australia, Indonesia, South Africa etc2, Specification Granularity : 80-140mesh Grand Composition SA8SA6SA4SA2ZrO2≥66%≥65%≥ ... yellow, orange, red, brown and other colors, hardness 7.8, specific gravity 4.6-4.71, 1 ... fluorozirconate, potassium, zirconium sulfate, etc.). zircon sand specification