VENDU Améthyste trapiche 6 améthyste Polariscope: Anisotropic (often opaque)

Polariscope: Anisotropic (often opaque)

Polariscope: Anisotropic (difficult to observe)

saccharoïdeClivage: AucunPolariscope: AnisotropeIndice de réfraction: Entre 1

clivage basalPolariscope: Anisotrope (rétablit tous les 90°)Indice de réfraction: Np: 1

Treatments that exist to modify malachite:

VENDU Améthyste trapiche 6 améthyste Polariscope: Anisotropic (often opaque)Trapiche amethyst cabochon. Color: Purple Shape: Oval Size: 31. 96 x 21. 92mm Weight in grams: 8. 63g Carat weight: 43. 15 carat Country of origin: South Africa Gemological information about amethyst: Possible color: Blue mauve, purple, dark magenta, purple magenta Density: 2. 65 Hardness: 7 Crystal system: Trigonal Fracture: Conchoidal Cleavage: None Polariscope: Anisotropic (restores all 90, except in the optical axis) Refractive index: n0: 1. 538