Réf : BJ420

Minéral critallisé de cristal de roche du Pérou

Rock crystal - Peru - crystal minerals 10.3 cm / 151g / BJ420 - Vignette | 1001 minéraux

Rock crystal - Peru - crystal minerals 10.3 cm / 151g / BJ420

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ROCK CRYSTAL belongs to the silicate group. It mainly contains silicon. Its chemical formula is the same as Quartz, SiO 2 .

ROCK CRYSTAL occurs in cryptocrystalline form or with colorless prismatic crystals. Its hardness is equal to 7/10 on the Mohs scale (10 for diamond) and its density is 2.7 (1 for water). The line on porcelain is colorless. Rock crystal, when pure, allows light to pass through perfectly.

The "ghosts" present in ROCK CRYSTALS are due to the formation of crystallization in successive stages.

Unique piece - Contractual photos

Origin: crystal minerals from Peru

Dimensions: 10.3 x 6.5 x 3 cm

Weight: 151 g