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Namely: Carbonaceous rock
673 Birefringence: Most of the time it is zero Chelsea Filter: Inert Spectrum: Not observable / not diagnostic Different countries where jade may be mined: China
Color: Light green to dark green zoning Form: Indefinite form Size: 33
Sizes: Between 4 and 6mm
Note: It can be found under the contraction azurmalachite
Calcite 9 arbres Namely: Carbonaceous rockCabochon en calcite. Couleur: Beige et brun Forme: Ovale Taille: 42,75 x 29,35mm Poids en gramme: 14,34g Poids en carat: 71,70 carat Pays d'origine: Prou Informations gemmologiques sur la calcite: Couleurs possibles: Incolore, blanc, jaune, vert, bleu, rouge, orange, brun, gris, noir, magenta Densit: Entre 2,60 et 2,80 Duret: 3 Systme cristallin: Trigonal Cassure: Conchodale Clivage: Parfait Polariscope: Anisotrope, rtablit tous les 90, sauf dans
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