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Amethyst with cristobalite 8.46 ct.

#4677

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100,00 €

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Amethyst with cristobalite  8.46 ct.

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Amethyst with Cristobalite

The Cristobalite is one of the three silica forms, it crystallized at an higher temperature compare to quartz: 1710C° instead for the quartz is 870 C° and the tridimite is 1470C°.

Generally the crystals are fibrous-rounded balls and in this amethyst are very visible.

Unusual stone for collector.

Size: 18.6x10x6.8 mm.

Weight: 8.46 ct.

CODE# 4677

OriginBrasile

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