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- Aventurine quartz (aventurine) when it has a sparkling effect linked to the presence of inclusions
- Irradiated synthetic quartz
Les nanosphérules de silice sont:- Soit d'une forme différente autre que celle d'une sphère - Soit trop grosses- Soit de diamètres différents les unes des autresSi l'un de ces paramètres rentrent en jeu
Spectrum: Indistinct
VENDU Tourmaline rubellite 4 bois - Aventurine quartz (aventurine) whenRubellite tourmaline cabochon. Color: Pink and white Shape: Drop Size: 32. 03 x 20. 61mm Weight in grams: 6. 38g Carat weight: 31. 92 carat Country of origin: Madagascar Gemological information about tourmaline: Density: Between 2. 84 and 3. 40 Hardness: Between 7 and 7. 5 Crystal system: Trigonal Fracture: Subconchoidal to irregular Cleavage: None Polariscope: Anisotropic (restores all 90 except in the optical axis) Refractive index: Ne: 1. 603 to 1.
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