| Mineral | Eudidymite |
|---|---|
| Formula | NaBe2Si3O7(OH) |
| Crystal Form | Monoclinic/Prismatic [2/m] |
| Cleavage | [001] Perfect, [551] Good |
| Color | White or Colorless, Grayish blue, Blue, Violet, Yellow |
| Density | 2.6 g/cm3 |
| Diaphaneity | Transparent to translucent |
| Fracture | Uneven to Conchoidal |
| Hardness | 6.0 |
| Lustre | Vitreous, Pearly on cleavage |
| Streak | White |
| Dana 8 Class | 66.3.1.3 |
| Strunz Class | VIII/G.04-10 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 156 |