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Ships within 48 hours · Estimated delivery Sep 1 - Sep 6
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Description
031 (chrome diopside: 0
25 carat Country of origin: Tanzania Treatment: Contains colorless oil residue that is present in small fractures of the stone
Approximate dimensions: Length: 9
- Black tourmaline
Hypersthène 26 forme diamant 031 (chrome diopside: 0Cabochon en hypersthne. Couleur: Gris Forme: Ovale Taille: 44,54 x 30,47mm Poids en gramme: 23,55g Poids en carat: 117,75 carat Pays d'origine: Canada Informations gemmologiques sur l'hypersthne: Couleur possible: Gris, vert, brun, noir Densit: Entre 3,43 et 3,90 Duret: Entre 5 et 6 Systme cristallin: Orthorombique Cassure: Irrgulire Clivage: Parfait Polariscope: Anisotrope Indice de rfraction: np: 1,686 1,755 nm: ? ng: 1,703 1,772 Birfringence: 0,015
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