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orange and/or black
Nombre de perles en 10mm: 36
La préhnite peut-être confondue avec:
Number of pearls per row: 33
A savoir: C'est une roche granitique composée de feldspath rose-orangé et d'épidote verte
Perles en tourmaline multicolore entre 3 et 4mm Sizes:4mm orange and/or blackMulticolored tourmaline beads. Color: Yellow, green, orange, pink, red, brown, black, blue, Sizes between 3 and 4mm Country of origin: Mozambique, India, Madagascar, Brazil Gemological information about tourmaline: Density: Between 2. 84 and 3. 40 Hardness: Between 7 and 7. 5 Crystal system: Trigonal Fracture: Subconchoidal to irregular Cleavage: None Polariscope: Anisotropic (restores all 90 except in the optical axis) Refractive index: Ne: 1. 603 to
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