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740Parties translucides brunes
orangé jaune (tinaksite)
Shimmering reflections
- Harlequin opal
Namibia Malachite can be confused with: - Glass paste - Plastic - Resin - "Dead" turquoise - Synthetic malachite Treatments that exist to modify malachite: - Resin - Reconstituted malachite is also made by compressing it
Perles en tourmaline noire, forme carré Acier inoxydable 740Parties translucides brunesBlack tourmaline beads in square cube shape. Color: Black Size: 4mm Country of origin: Madagascar 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 1. 772 No: 1. 619 to 1. 778 Birefringence: 0. 013 to 0. 033 Chelsea
