Mooie Braziliaanse Topaas Weight: 6.96 CT. Size: 15x10 mm Shape: Pear Shape Cut Color: Vibrant Pastel Champagne Clarity: Clean Luster: Stunning Origin: Brazil Hardness: 8 Specific Gravity: 3.4 - 3.5+ Refractive Index: 1.61 - 1.64 Chemical Composition: Al2SiO4(F,OH)3, Aluminum Silicate Fluoride Hydroxide Crystal Structure: Orthorhombic Treatment: None