Russia, Canada, Australia, India, Brazil, Color: colorless, light yellow, brownish. Very rare varieties: red, Not Available, Not Available, yellow. Hardness: 10, Refractive index: 2.42, Density: 3.52, Chemical composition: C, Crystal structure: cubic, Origins: Southern and central Africa, Russia, Canada, Australia, India, Brazil.
Brazil, Madagascar, Zimbabwe, Russia, Sri Lanka, India, Burma, Color: blue, Not Available, Not Available, Not Available, Hardness: 8.5, Refractive index: 1.74 1.77, Density: 3.68 3.80, Chemical composition: BeAl2O3, Crystal structure: orthorhombic, Origins: Brazil, Madagascar, Zimbabwe, Russia, Sri Lanka, India, Burma. Bluish stones are most valuable. Prices for chrysoberyls grow rapidly with weight, and clean stones bigger than 15 cts are rare and therefore an excellent investment.