Brazil
Russia, Southern and central Africa, Color: green, yellowish green, Hardness: 6.5, Refractive index: 1.88 1.89, Density: 3.82 3.85, Chemical composition: Ca3Fe2(SiO4)3, Crystal structure: isometric, Origins: Russia, Namibia
(Fe2+ ,Mg)Al 2(PO 4) 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Not Available