Cubic Diamond Vs Hexagonal Diamond
July31, 2025
Cubic Diamond Vs Hexagonal Diamond
Feature | Cubic Diamond (Diamond) | Hexagonal Diamond (Lonsdaleite) |
|---|---|---|
Crystal Structure | Cubic | Hexagonal |
Rarity | Common | Rare |
Hardness | 115 GPa (Vickers) | Predicted to be harder |
Stiffness | Lower | Higher |
Strength | Lower | Higher |
Applications | Cutting tools, abrasives | Cutting tools, abrasives, research |
Color | Varies, often colorless or tinted | Black |
Formation | High-pressure, high-temperature environment | High-pressure, high-velocity impact (meteorite impacts) |
Stability | Thermodynamically stable | Less stable than cubic diamond |
Band Gap | Indirect gap of 5.5 eV | Indirect gap of 4.5 eV |
