| PROPERTIES | Created Emerald (Biron type) Hydrothermal | Created Emerald (Gilson type) Flux melt | Natural Emerald |
| Classification | Beryl | Beryl | Beryl |
| Chemical Composition | Be3Al2Si6O18 | Be3Al2Si6O18 | Be3Al2Si6O18 |
| Crystal System | Hexagonal | Hexagonal | Hexagonal |
| Hardness (mohs) | 7.5-8.0 | 7.5-8.0 | 7.5-8.0 |
| Specific Gravity | 2.70 | 2.65-2.70 | 2.65-2.70 |
| Melting Point | 1,410∘C | 1,410∘C | 1,410∘C |
| Transparency | Transparent | Transparent | Transparent |
| Refractive Index | 1.570-1.577 | 1.563-1.568 | 1.565-1.598 |
| Birefringence | 0.007 | 0.005 | 0.005-0.008 |
| Average Dispersion | 0.014 | 0.014 | 0.014 |
| Chelsea color filter | Bright red | Dark red/pink | Dark red/pink |
| Inclusion | Liquidus, Solidus | Liquidus, Solidus | Liquidus, Solidus-liquidus |