cubic Simulant diamond simulant

LuAG (Lutetium Aluminium Garnet) (Faceted)

Lu3Al5O12

Crystal Structure

CDL Notation

 #! Species: LuAG (Lutetium Aluminium Garnet)
#! System: Cubic (m3m)
#! Habit: Garnet-type dodecahedron with trapezohedron
cubic[m3m]:{110}@1.0 + {211}@0.7

Crystal System cubic

Point Group m3m

Crystal Forms (2)

{110} {211}

Quick Facts

Hardness

8.5

Specific Gravity

6.73

Refractive Index

1.84

Optical Character

Isotropic

Physical Properties

Crystal Systemcubic

Hardness (Mohs)8.5

Specific Gravity6.73

CleavageNone

FractureConchoidal

LustreVitreous to sub-adamantine

Optical Properties

Refractive Index1.84

Optical CharacterIsotropic

Dispersion0.028

FluorescenceWeak

Origin & Identification

OriginSimulant

Growth MethodCzochralski

First Produced2000

Diagnostic FeaturesHigher RI than YAG (1.84 vs 1.833), higher hardness than most simulants (8.5), singly refractive, thermal probe reads non-diamond, rare in trade, primarily a collector/research material