Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Color: color change, from bluish green (daylight) to purple, red or brown (incandescent light), Hardness: 8, Refractive index: 1.74 1.77, Density: 3.68 3.80, Chemical composition: BeAl2O4, Crystal structure: orthorhombic, Origins: Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma
Southern and central Africa, USA, Australia, Brazil, USA, Australia, Brazil, USA
Scorpio
Cancer, Taurus, Cancer, Taurus, Cancer, Taurus
Transparent, Transparent to nearly opaque
Translucent, Translucent, Opaque, Translucent to nearly opaque