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Apophyllite ct.6.04



219,60 €

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Apophyllite ct.6.04

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Apophyllite A popular mineral among collectors who has been recently re-considered : check Is a Hydrated Potassium Calcium Sodium Silicate Fluoride Hydroxide with formula (K,Na)Ca4Si8O20(F,OH) - 8H2O . Although is quite common in natural crystal, is very difficult to cut and polish, due to his easy cleavage: a challenge for the cutters. The hardness is 4.5-5 and this gem here comes from a classic locality: Poona,India. Clean at naked eye Size: 15.5x13.7x8.4 mm. Weight: 6.04 ct. CODE#2067

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