Perles en quartz avec inclusions de tourmaline entre 4 et 10mm, QTD Sizes:6mm Common opal is distinguished from

Common opal is distinguished from noble opal by its construction

aussi appelé oeil de lynx ou oeil de tigre gris

Couleur possible: Violet à lilas

Number of drop pearls on a row: 15

Forme: Carré

Perles en quartz avec inclusions de tourmaline entre 4 et 10mm, QTD Sizes:6mm Common opal is distinguished fromQuartz 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 10mm 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