Sphene Approx Weight: 0.05 CT. Size: 2.5x2 mm Shape: Oval Facet Color: Nice Green Lemon Clarity: Eye Clean To Slight Inclusion Luster: Astonishing Origin: Brazil Hardness: 5 - 5.5 Specific Gravity: 3.3 - 3.6 Refractive Index: N/A Chemical Composition: CaTiSiO5, Calcium Titanium Silicate Crystal Structure: Monoclinic Treatment: None
