Prachtige grotere Rookkkwarts 8.47 CT. 30x9 mm Marquise. Color: Smoky Color Clarity: Slightly Included Luster: Blazing Origin: Brazil Hardness: 7 Specific Gravity: 2.65 - 2.91 Refractive Index: 1.544 - 1.553 Chemical Composition: SiO2, Silicon Dioxide Crystal Structure: Trigonal