... normally because of the different Country of Origin with the different types and quantity of impurities, resulting ... 4.6-4.71, 1.93-2.01 refractive index, birefringence, absorb light directly; magnetic susceptibility low, ... point of 2550 °C. Zircon sand normally symbiotic with ilmenite, rutile, monazite and xenotime in the Coastal ... zirconium sulfate, etc.). High quality Zirconium Sand with best price