mooi Transparante Paarse Amethist 9x7 mm Ovale Cabochon ± 2.00 CT. Color: Best Purple Clarity: Transparent Luster: Good Origin: Brazil Hardness: 7 Specific Gravity: 2.65 - 2.91 Refractive Index: 1.544 - 1.553 Chemical Composition: SiO2, Silicon Dioxide Crystal Structure: Trigonal
