Heliodor
| Synonyms: | Golden Beryl, Heliodore |
| Variety of: | Beryl |
| Classification: | Silicates, Cyclosilikates |
| Chemical formula: | Be3Al2Si6O18 |
| Crystal system: | Hexagonal |
| Density (g/cm3): | 2,68 - 2,72 |
| Tenacity: | Brittle |
| Cleavage: | Indistinct |
| Fracture: | Conchoidal |
| Hardness (Mohs): | 7,5 - 8 |
| Colour: | Lemon to golden yellow |
| Lustre: | Vitreous |
| Streak: | White |
| Application: | Gemstone |