cubic synthetic synthetic diamond
HPHT Diamond (Cuboctahedron)
C
Quick Facts
Hardness
10.0
Specific Gravity
3.52
Refractive Index
2.417
Optical Character
Isotropic
Crystal Structure
#! Species: HPHT Diamond
#! System: Cubic (m3m)
#! Habit: Cuboctahedral growth morphology
cubic[m3m]:{111}@1.0 + {100}@1.0
cubic
m3m
{111} {100}
Physical 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 greenish-yellow (SW UV), cross-shaped pattern under DiamondView
Origin & Identification
Originsynthetic
Growth Methodhpht
ManufacturerVarious (De Beers/Element Six, Gemesis, New Diamond Technology)
First Produced1954
Diagnostic FeaturesCuboctahedral growth sectors, metallic flux inclusions (Fe, Ni, Co), magnetic attraction (some), colour zoning follows growth sectors, Type Ib nitrogen (single substitutional), cross-shaped fluorescence pattern
Colours
YellowColourlessBlueGreenOrange
Common Inclusions
Metallic flux inclusions (Fe/Ni/Co)Dark metallic spotsGraining
Interactive Preview
Open this crystal in the CDL Playground to rotate, export, and explore in 3D.
Open in Playground #! Species: HPHT Diamond
#! System: Cubic (m3m)
#! Habit: Cuboctahedral growth morphology
cubic[m3m]:{111}@1.0 + {100}@1.0
Natural Counterpart
The natural gem this synthetic imitates
Related Minerals
Other minerals in the cubic system
