Rhodolite Garnet Weight: 0.30 CT. Size: 5x3 mm Shape: Oval Facet Color: Rich Red Pink Clarity: Clean Luster: Blazing Origin: Africa Hardness: 7 - 7.5 Specific Gravity: 3.6 Refractive Index: 1.73 Chemical Composition: Mg3Al2(SiO4)3, Magnesium Aluminum Silicate Crystal Structure: Isometric Treatment: None