Beryl
Compositions: aluminum silicate, sometimes with
some sodium, lithium, and cesium.
Color: Bright to pale green, light to dark blue,
blue-green, yellow, pink, purple, red, brown, colorless, white, and gray.
Some specimens are a lighter color on one end of the crystal than on the
other, and some unusual multicolored blue and white or green and white
specimens also exist.
Streak: colorless
Hardness: 7 and a half to 8
Luster: Vitreous
Cleavage: 3, 1-basic
Transparent: to opaque
Uses: metal prized gems, aquamarine, semi-precious
gem, worn in jewelry & beryl crystals
Chemical Formula: Be3Al2SiO6
By: Jeremy Rodgers