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Black Obsidian:
- Calcédoine bleue
I called it "A breath of freedom" because it allows me to launch a new range of products on my site and it perfectly represents what "A l'or gemme" is for me
black traces
11 mm Weight in grams: 12
Perles en améthyste facettées entre 6 et 10mm Cube Black Obsidian:Faceted amethyst beads. Color: Dark purple. Sizes: Between 6 and 10mm Country of origin: Brazil 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. 547 to 1. 553 Birefringence: 0. 009 Chelsea
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