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
Afghanistan, Southern and central Africa, Brazil, Mozambique, Pakistan, Russia, Sri Lanka, USA
Not Available
Poseidon, Neptune, Tiamat, Mara
Transparent, Transparent to nearly opaque
Transparent, Translucent, Transparent to translucent