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Perles en tourmaline noire, forme carré brun 553Biréfringence: 0

SKU: 15972341445

4.9
USD23.80 USD43.80

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Ships within 48 hours · Estimated delivery Jul 29 - Aug 3

Description

553Biréfringence: 0

6mm x 9mm de large

- Jaspe vert

Il est constitué de 108 perles en apatite bleue

Perles en tourmaline noire, forme carré brun 553Biréfringence: 0Perles en tourmaline noire forme carr cube. Couleur: Noir Taille: 4mm Pays d'origine: Madagascar Informations gemmologiques sur la tourmaline: Densit: Entre 2,84 et 3,40 Duret: Entre 7 et 7,5 Systme cristallin: Trigonal Cassure: Subconchodale irrgulire Clivage: Aucun Polariscope: Anisotrope (rtablit tous les 90 sauf dans l'axe optique) Indice de rfraction: Ne: 1,603 1,772 No: 1,619 1,778 Birfringence: 0,013 0,033 Filtre chelsea: Rose (seulement pour

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