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Apophyllite 4.28 ct.



400,00 €

1 left in stock

Apophyllite  4.28 ct.

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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.

Eye clean, custom cut by Luigi Mariani.

Size:13x9.8x8 mm.

Weight: 4.28 ct.



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