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Color: Light green to dark green zoning Shape: Drop Size: 40
- Aventurine quartz (aventurine) when it has a sparkling effect linked to the presence of inclusions
0009 / Béryl maxixe: 0
- Irradiation au radio-cobalt
- Fire Opal
Perles en prehnite, forme diamant, 8mm facettées Color: Light green to darkPrehnite beads, diamond shape. Color: Green and some black Size: 8mm 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 1. 665 Birefringence: 0. 021 to 0.
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