Chrysoberyl
ChrysoberylJewelryWiki Editorial·3 sources·Reviewed 2026-08-04
The species that includes alexandrite and cat's eye. High refractive index and hard enough for daily wear.
Properties
| Property | Value | Authority |
|---|---|---|
| Mohs hardness | 8½ [3] | — |
| Refractive index | 1.746–1.763 [1] | — |
| Chemical formula | BeAl2O4 [3] | — |
| Crystal system | Orthorhombic [2] | — |
Sources
- International Gem Society — reference charts (Mohs hardness, specific gravity, refractive index) — International Gem Society (IGS reference charts)
- Wikipedia — mineral article infoboxes (crystal system) — Wikipedia contributors (Wikipedia mineral infoboxes)
- Handbook of Mineralogy — Mineral Data Publishing / Mineralogical Society of America (Handbook of Mineralogy, Mineral Data Publishing)