COMPARE GUIDE
Demantoid GarnetVSTsavorite Garnet
Side-by-side comparison of physical properties, fluorescence, and crystal system — to identify by observation.
Decisive distinctionsDECISIVE
- ◎ is higher in Demantoid Garnet, giving a numerical distinguishing point.
- ◎ is higher in Demantoid Garnet, 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.
Physical propertiesPROPERTIES
| Property | A: Demantoid Garnet | B: Tsavorite Garnet | Verdict |
|---|---|---|---|
| Refractive index (RI) | 1.880–1.895 | 1.740–1.760 | A higher |
| Specific gravity (SG) | 3.82–3.85 | 3.57–3.73 | A higher |
| Mohs hardness | 6.5–7.0 | 7.0–7.5 | Overlap |
| Birefringence | — | — | — |
| Dispersion | 0.057 | — | — |
Optics & fluorescenceOPTICS & UV
| Property | A: Demantoid Garnet | B: Tsavorite Garnet |
|---|---|---|
| Crystal system | 等軸晶系 | 等軸晶系 |
| Pleochroism | — | — |
| Chelsea filter | red / pink | inert |
| UV (long-wave) | inert | inert |
| UV (short-wave) | inert | weak (yellow) |
ObservationOBSERVATION
◆Tsavorite has weaker and lower RI (~1.74). Demantoid's rainbow flash is unmistakable side by side.
Color categoriesCATEGORIES
A: Demantoid Garnet
Green
B: Tsavorite Garnet
Green
DISTINGUISHING TOOLS · 3 ITEMS
Distinguishing tools
Tools that decide between Demantoid Garnet 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.