cubic Synthetic synthetic diamond
CVD Diamond (CVD Plate)
C
Crystal Structure
#! Species: CVD Diamond
#! System: Cubic (m3m)
#! Habit: Tabular {100}-dominant growth
cubic[m3m]:{100}@1.0 + {111}@0.3
cubic
m3m
{100} {100} {111}
Quick Facts
Hardness
10.0
Specific Gravity
3.52
Refractive Index
2.417
Optical Character
Isotropic
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Open in PlaygroundPhysical Properties
Crystal Systemcubic
Hardness (Mohs)10.0
Specific Gravity3.52
CleavagePerfect octahedral {111}
FractureConchoidal
LustreAdamantine
Optical Properties
Refractive Index2.417
Optical CharacterIsotropic
Dispersion0.044
FluorescenceOften strong orange or red phosphorescence
Origin & Identification
OriginSynthetic
Growth MethodCVD
ManufacturerVarious (Element Six, Diamond Foundry, WD Lab Grown)
First Produced1952
Diagnostic FeaturesTabular growth morphology, silicon-vacancy (SiV) centres at 737nm, lack of nitrogen aggregates (Type IIa), phosphorescence (some), inscribed girdle, strain patterns differ from natural
Colours
ColourlessNear-colourlessBrownBlue (rare)
Common Inclusions
Graphite inclusions (dark spots)Non-diamond carbonPoint defects
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Open in PlaygroundNatural Counterpart
The natural gem this synthetic imitates
Related Minerals
Other minerals in the cubic system
