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basal cleavage Polariscope: Anisotropic (restores every 90°) Refractive index: Np: 1
blanc cassé
57g Carat weight: 47
this is the case for example of certain microclines
Country of origin: India
VENDU Aigue-marine 20 Chaman basal cleavage Polariscope: Anisotropic (restoresAquamarine cabochon. Color: Blue Shape: Drop Size: 29. 23 x 25. 41mm Weight in grams: 7. 64g Carat weight: 38. 25 carat Country of origin: Brazil Gemological information about aquamarine: Possible colors: Light blue to dark blue. Blue green Density: Between 2. 68 and 2. 80 Hardness: 7. 5 Crystal system: Hexagonal Fracture: Conchoidal Cleavage: Imperfect Polariscope: Anisotropic (restores all 90, except in the optical axis) Refractive index: No: 1. 572
