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Chemical Composition : Al(PO4)·2(H2O)
Hardness : 3.5 – 4.5
Specific Gravity (Density) : 2.20 – 2.61 (g/cm3)
Refractive Index : 1.563 – 1.594 Biaxial ( – )
Variscite as crystals is very rare and minute. The massive form or as nodules is fairly common and is used for cabochons and carving. The lime green material from Utah is particularily attractive with its interesting patterns and swirls of bright green colors.