cubic simulant diamond simulant
GGG (Gadolinium Gallium Garnet) (Faceted)
Gd3Ga5O12
Quick Facts
Hardness
6.5
Specific Gravity
7.05
Refractive Index
2.02
Optical Character
Isotropic
Crystal Structure
#! Species: GGG (Gadolinium Gallium Garnet)
#! System: Cubic (m3m)
#! Habit: Garnet-type dodecahedron with trapezohedron
cubic[m3m]:{110}@1.0 + {211}@0.6
cubic
m3m
{110} {211}
Physical Properties
Crystal Systemcubic
Hardness (Mohs)6.5
Specific Gravity7.05
CleavageNone
FractureConchoidal
LustreAdamantine
Optical Properties
Refractive Index2.02
Optical CharacterIsotropic
Dispersion0.045
FluorescenceWeak orange
Origin & Identification
Originsimulant
Growth Methodczochralski
First Produced1973
Diagnostic FeaturesVery high SG (7.05), easily distinguished by heft test, lower hardness (6.5), thermal probe reads non-diamond, rarely seen in modern trade (superseded by CZ)
Colours
Colourless
Common Inclusions
Gas bubbles
Interactive Preview
Open this crystal in the CDL Playground to rotate, export, and explore in 3D.
Open in Playground #! Species: GGG (Gadolinium Gallium Garnet)
#! System: Cubic (m3m)
#! Habit: Garnet-type dodecahedron with trapezohedron
cubic[m3m]:{110}@1.0 + {211}@0.6
Natural Counterpart
The natural gem this simulant imitates
Related Minerals
Other minerals in the cubic system
