Natural Ruby Weight: 6.40 ct Shape and Cute: Octagon Mixed Dimension: 12.50*8.70*5.80 mm Color: Pinkish Red Lustre: Vitreous Transparency: Transparent Optic Character and figure: Anisotropic Double Refrective (DR) Refrective Index: 1.77 Specific Gravity: 4 Microscopic View: Crystal Hardness: 9 Treatment: Unheated, Untreated
