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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
Les traitements qui existent pour modifier les citrines:
Number of pearls on a row of 8mm: Between 48 and 51
Note: There are two types of opal: noble (also called precious) and common
Polariscope: Isotrope
- Verre bleu
Perles en iolite Perle décorative Les traitements qui existent pourIolite beads. Color: Dark blue Size: 7 x 8mm Country of origin: Brazil Gemological information about iolite: Possible color: Light to dark blue, gray to colorless purple Real name: Cordierite Density: Between 2. 57 and 2. 66 Hardness: 7. 5 Crystal system: Orthorhombic Fracture: Conchoidal Cleavage: Indistinct Polariscope: Anisotropic Refractive index: Np: 1. 530 to 1. 533 Nm: 1. 535 to 1. 561 Ng: 1. 538 to 1. 563 Birefringence: 0. 006 to 0. 012
