Mooie 10 mm Rond gefaceteerde Prehniet! Weight: 3.92 CT. Shape: Round Cut Size: 10 mm Color: Best Lemon Green Clarity: Transparent Luster: Good Origin: Australia Hardness: 6 - 6.5 Specific Gravity: 2.9 - 2.95 Refractive Index: N/A Chemical Composition: Ca2 Al2 SI3 O10(Oh)2, Calcium Aluminum SIlicate Hydroxide Crystal Structure: Orthorhombic Treatment: None