Perles en quartz avec inclusions de tourmaline entre 4 et 12mm, QTU Sizes:10mm Treatments that exist to modify

Treatments that exist to modify sodalite:

Birefringence: 0

elle a alors un reflet opalescent sur fond incolore)

- Amethyst

Philippines

Perles en quartz avec inclusions de tourmaline entre 4 et 12mm, QTU Sizes:10mm Treatments that exist to modifyQuartz beads with tourmaline inclusions. Color: Colorless, black (more or less black depending on the number of tourmaline inclusions, quartz can be more or less opaque). Sizes between 4 and 12mm Country of origin: Brazil Gemological information about quartz with tourmaline inclusions: Other name: Love Arrow Quartz Density: 2. 65 Hardness: 7 Crystal system: Trigonal Fracture: Conchoidal Cleavage: None Polariscope: Anisotropic (restores all 90 except