Labradorite 295 cristal de roche 92 Hardness: Between 6 and

92 Hardness: Between 6 and 7 Crystal system: Orthorhombic Breakage: Uneven Cleavage: Distinct in one direction Polariscope: Opaque Refractive index: - Birefringence: - Chelsea filter: - Spectrum: Not observable / not diagnostic Different countries where marcasite can be extracted: United States

22 carat Country of origin: Russia Gemological information on charoite: Possible color: Violet to lilac

011 Chelsea Filter: Inert Spectrum: Not observable / not diagnostic Different countries where rhodonite can be mined: Australia

Carat weight: 10

Labradorite 295 cristal de roche 92 Hardness: Between 6 andCabochon en labradorite. Couleur: Bleu Forme: Rond Taille: 35,13mm de diamtre Poids en gramme: 16,98g Poids en carat: 84,93 carat Pays d'origine: Madagascar Informations gemmologiques sur la labradorite: Couleurs possibles: Couleur de fond: incolore a gris fonc, diffraction: violette, bleue, verte, jaune, orange et rouge (rare) Densit: entre 2,68 2,76 Duret: entre 6 et 6,5 Systme cristallin: Triclinique Cassure: Subconchodale, irrgulire esquilleuse