Lithium and manganese can color beryls red, but the phenomenon is seldom seen. This rarity only occurs in the American state of Utah, and is known as bixbite.
Formula: Be3Al2Si6O18
Hardness: 7.5 – 8
Density: 2.65 – 2.76 g/cm3
Refractive Index: 1.561 – 1.576 DR: 0.004 – 0.006
Color: Red, violet-red
Countries of Origin: U.S.A.