- Color: blue, green, yellow, brown
- 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.