Minerals and Metals in Ancient India v2.c47.186
Minerals and Metals in Ancient India v2.c47.186
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v2.c47.186
*Zircon* : This is the orthosilicate of zirconium. ZrSiO₄. This may contain some hafnium and little Fe₂O₃, the latter giving it a brownish colour. Pure zircon is colourless, adamantine in luster. But unlike diamond, it is birefringent and less hard (7.5). Its density is 4.68-4.70.