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Zirconium sand

Zirconia, also known as zircon, is a mineral mainly composed of zirconium silicate. Pure zircon sand is colorless transparent crystal, often producing area different, the amount and type of impurities and dyed yellow, orange, red, brown wait for color, crystal structure belongs to the quartet SPAR, sifang cone column, the proportion of 4.6 ~ 4.71, sometimes the proportion changes related to the composition and altered state of zircon cleavage is incomplete, even mohs hardness of 7 ~ 8, the refractive index of 1.93-2.01, melting point with different impurities contained in the 2190 ~ 2420 .