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frequently crossed with black or dark brown veins
Taille: 40
Lodolite quartz beads
Different countries where the eagle eye may be extracted: South Africa
Traitements possible sur le lapis-lazuli:
Perles en améthyste, forme coeur quartz fumé frequently crossed with black orAmethyst beads, heart shape. Color: Light to dark purple. Size: 8 x 4mm Country of origin: Brazil Number of hearts in a row: Between 54 and 55 Gemological information about amethyst: Possible color: Blue mauve, purple, dark magenta, purple magenta Density: 2. 65 Hardness: 7 Crystal system: Trigonal Fracture: Conchoidal Cleavage: None Polariscope: Anisotropic (restores all 90, except in the optical axis) Refractive index: n0: 1. 538 to 1. 544 ne: 1.
