Perles en chrysoprase entre 4 et 10mm Sizes:8mm 18 carat Country of origin:

18 carat Country of origin: Congo Gemological information about malachite: Possible color: Light green to dark green with zoning Density: Between 3

Malachite cabochon

Informations gemmologiques sur le quartz à inclusions de rutile

Cassure: Esquilleuse

Weight in grams: 20

Perles en chrysoprase entre 4 et 10mm Sizes:8mm 18 carat Country of origin:Chrysoprase beads Color: Green Sizes between 4 and 10mm Country of origin: Australia Gemological information on chrysoprase: Possible color: Apple green to light green Density: Between 2. 57 and 2. 64 Hardness: 6 Crystal system: Trigonal Microcrystalline Fracture: Conchoidal; splintery, irregular Cleavage: None Polariscope: Anisotropic Refractive index: From 1. 53 to 1. 55 ne: 1. 539 to 1. 545 n0: 1. 526 to 1. 535 Birefringence: +0. 004 to +0. 009