Perles en prehnite entre 6 et 12mm facette noir (plus ou moins noir

noir (plus ou moins noir en fonction du nombre d'inclusions de tourmaline

Gemological information on smoky quartz:

as well as self-confidence and independence

le quartz peut-être plus ou moins opaque)

Perles en prehnite entre 6 et 12mm facette noir (plus ou moins noirPrehnite beads with numerous epidote inclusions. Color: Green with lots of black Sizes between 6 and 12mm Country of origin: Mali Gemological information about prehnite: Possible colors: Colorless, white, green, yellow, brown Density: between 2. 80 and 2. 95 Hardness: between 6 and 6. 5 Crystal system: Orthorhombic Breakage: Irregular Cleavage: Distinct Polariscope: Anisotropic Refractive index: Np: 1. 611 to 1. 632 Nm: 1. 615 to 1. 642 Ng: 1. 632 to