COMPARE GUIDE
Green SapphireVSTsavorite Garnet
Side-by-side comparison of physical properties, fluorescence, and crystal system — to identify by observation.
- ◎ is higher in Green Sapphire, giving a numerical distinguishing point.
- ◎ is higher in Green Sapphire, giving a numerical distinguishing point.
- ◎ is higher in Green Sapphire, giving a numerical distinguishing point.
Note: properties whose numeric ranges do not overlap are auto-extracted. Both are measurable with a refractometer or heavy-liquid bath.
| Property | A: Green Sapphire | B: Tsavorite Garnet | Verdict |
|---|---|---|---|
| Refractive index (RI) | 1.762–1.770 | 1.740–1.760 | A higher |
| Specific gravity (SG) | 3.95–4.03 | 3.57–3.73 | A higher |
| Mohs hardness | 9.0 | 7.0–7.5 | A higher |
| Birefringence | 0.008 | — | — |
| Dispersion | — | — | — |
| Property | A: Green Sapphire | B: Tsavorite Garnet |
|---|---|---|
| Crystal system | 六方晶系（三方晶系） | 等軸晶系 |
| Pleochroism | 強（緑・黄緑） | — |
| Chelsea filter | inert | inert |
| UV (long-wave) | inert | inert |
| UV (short-wave) | inert | weak (yellow) |
◆Tsavorite is singly refractive (garnet group), inert under UV, has SG ~3.6, and shows brighter, more transparent green; green sapphire is doubly refractive, denser (SG 4.0), and shows characteristic .
Distinguishing tools
Tools that decide between Green Sapphire and Tsavorite Garnet in practice.
Note: this page is auto-generated from published GIA / CGL reference values. Individual stones, treatments, and synthetics may fall outside these ranges. For a definitive identification, consult an accredited gem laboratory.