.svg)
orthorhombic synthetic
Synthetic Alexandrite (Czochralski Boule)
BeAl2O4:Cr
Quick Facts
Hardness
8.5
Specific Gravity
3.71
Refractive Index
1.744
Crystal Structure
orthorhombic[mmm]:{110}@1.0 + {010}@0.6 + {111}@0.4 orthorhombic
mmm
{110} {010} {111}
Physical Properties
Crystal Systemorthorhombic
Hardness (Mohs)8.5
Specific Gravity3.71
CleavageDistinct on {110}, poor on {010}
FractureConchoidal
LustreVitreous
Optical Properties
Refractive Index1.744
Birefringence0.011
PleochroismVery strong trichroism
Dispersion0.015
Origin & Identification
Originsynthetic
Growth Methodczochralski
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}@0.6 + {111}@0.4 Natural Counterpart
The natural gem this synthetic imitates
Related Minerals
Other minerals in the orthorhombic system
