Préhnite 19 OVale 93 Hardness: Between 3 and

93 Hardness: Between 3 and 4 Crystal system: Trigonal Fracture: Conchoidal Cleavage: Perfect Polariscope: Anisotropic (restores every 90°) Refractive index: Ne: 1

64 carat Country of origin: Bolivia Gemological information about ametrine: Possible color: Purple with yellow to orange Density: 2

Poids en carat: 80

02 caratPays d'origine: IndeInformations gemmologiques sur la pierre de lune:A savoir: Le nom pierre de lune est un nom commercial

Préhnite 19 OVale 93 Hardness: Between 3 andPrehnite cabochon with some episode inclusions. Color: Green and some black Shape: Rectangle with rounded corners Size: 32. 50 x 30. 52mm Weight in grams: 16. 34g Carat weight: 81. 75 carat 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: