Mooie Goud Bruine Sideriet 4.5x3 mm Octagon uit Brazilië. Weight: 0.25 CT. Size: 4.5x3 mm Shape: Octagon Cut Color: Fine Brown Golden Clarity: Transparent Luster: Stunning Origin: Brazil Hardness: 3.5-4.5 Specific Gravity: 3.8+ Refractive Index: N/A Chemical Composition: FeCO3, Iron Carbonate Crystal Structure: Trigonal Treatment: None