cubic Synthetic synthetic diamond
CVD Diamond (CVD Plate)
Formula 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
Physical Properties
- Crystal System
- cubic
- Hardness (Mohs)
- 10.0
- Specific Gravity
- 3.52
- Cleavage
- Perfect octahedral {111}
- Fracture
- Conchoidal
- Lustre
- Adamantine
Optical Properties
- Refractive Index
- 2.417
- Birefringence
- 0
- Optical Character
- Isotropic
- Dispersion
- 0.044
- Fluorescence
- Often strong orange or red phosphorescence
Origin & Identification
- Origin
- Synthetic
- Growth Method
- CVD
- Manufacturer
- Various (Element Six, Diamond Foundry, WD Lab Grown)
- First Produced
- 1952
- Diagnostic Features
- Tabular growth morphology, silicon-vacancy (SiV) centres at 737nm, lack of nitrogen aggregates (Type IIa), phosphorescence (some), inscribed girdle, strain patterns differ from natural
Characteristics
Colours
ColourlessNear-colourlessBrownBlue (rare)
Common Inclusions
Graphite inclusions (dark spots)Non-diamond carbonPoint defects
Natural Counterpart
The natural gem this synthetic imitates
Related Minerals
Other minerals in the cubic system
