COMPARE GUIDE
Rhodolite GarnetVSRubellite
Side-by-side comparison of physical properties, fluorescence, and crystal system — to identify by observation.
Decisive distinctionsDECISIVE
- ◎ is higher in Rhodolite Garnet, giving a numerical distinguishing point.
- ◎ is higher in Rhodolite 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: Rhodolite Garnet | B: Rubellite | Verdict |
|---|---|---|---|
| Refractive index (RI) | 1.745–1.760 | 1.624–1.644 | A higher |
| Specific gravity (SG) | 3.74–3.94 | 3.04–3.10 | A higher |
| Mohs hardness | 7.0–7.5 | 7.0–7.5 | Nearly equal |
| Birefringence | — | 0.018 | — |
| Dispersion | — | — | — |
Optics & fluorescenceOPTICS & UV
| Property | A: Rhodolite Garnet | B: Rubellite |
|---|---|---|
| Crystal system | 等軸晶系 | 三方晶系 |
| Pleochroism | — | 強（赤・赤紫） |
| Chelsea filter | red / pink | red / pink |
| UV (long-wave) | inert | weak (red) |
| UV (short-wave) | inert | inert |
ObservationOBSERVATION
◆nclusions; rhodolite is singly refractive with no nclusions.
Color categoriesCATEGORIES
A: Rhodolite Garnet
Red / pink / Purple
B: Rubellite
Red / pink
DISTINGUISHING TOOLS · 3 ITEMS
Distinguishing tools
Tools that decide between Rhodolite Garnet and Rubellite 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.