Dimensions: approx. 150 x 190 x 120 mm (LxWxH) Crystal shape: trigonal Hardness: 7 (Mohs scale) Classification: IV/D.01-010 Chemical composition: silicon, oxygen
Dimensions: env. 150 x 190 x 120 mm (LxlxH) Forme des cristaux: trigonale Dureté: 7 (Échelle de Mohs) Classification: IV/D.01-010 Composition chimique: silicium, oxygène
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