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soda-lime or potassic series
Polariscope: Anisotropic (often difficult to observe)
Seraphinite is a member of the clinochlore family
Informations gemmologiques sur la pierre de lune:
Perles en iolite entre 4 et 10mm IT Goutte facettée soda-lime or potassic seriesIolite Cordierite beads. Color: Dark blue Sizes: Between 4 and 10mm 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:
US$ 40.00
US$ 175.00
US$ 2700.00
US$ 3200.00
US$ 1750.00
US$ 499.50
US$ 2400.00
