orthorhombic
Chrysoberyl
BeAl2O4
Quick Facts
Hardness
8.5
Specific Gravity
3.70-3.78
Refractive Index
1.746-1.755
Crystal Structure
orthorhombic[mmm]:{110}@1.0 + {010}@0.8 + {111}@0.5 orthorhombic
mmm
{110} {010} {111}
Physical Properties
Crystal Systemorthorhombic
Hardness (Mohs)8.5
Specific Gravity3.70-3.78
CleavageGood {110}, poor {010}
FractureConchoidal to uneven
LustreVitreous to subadamantine
Optical Properties
Refractive Index1.746-1.755
Birefringence0.008-0.010
PleochroismWeak to moderate (yellow-green, green shades)
Dispersion0.015
Interactive Preview
Open this crystal in the CDL Playground to rotate, export, and explore in 3D.
Open in Playground orthorhombic[mmm]:{110}@1.0 + {010}@0.8 + {111}@0.5 Related Minerals
Other minerals in the orthorhombic system