COMPARE GUIDE
Natural Pink SapphireVSPink Topaz
Side-by-side comparison of physical properties, fluorescence, and crystal system — to identify by observation.
Decisive distinctionsDECISIVE
- ◎ is higher in Natural Pink Sapphire, giving a numerical distinguishing point.
- ◎ is higher in Natural Pink Sapphire, giving a numerical distinguishing point.
- ◎ is higher in Natural Pink Sapphire, giving a numerical distinguishing point.
- ◎ is higher in Pink Topaz, 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: Natural Pink Sapphire | B: Pink Topaz | Verdict |
|---|---|---|---|
| Refractive index (RI) | 1.762–1.770 | 1.629–1.638 | A higher |
| Specific gravity (SG) | 3.95–4.03 | 3.50–3.57 | A higher |
| Mohs hardness | 9.0 | 8.0 | A higher |
| Birefringence | 0.008 | 0.010 | B higher |
| Dispersion | — | — | — |
Optics & fluorescenceOPTICS & UV
| Property | A: Natural Pink Sapphire | B: Pink Topaz |
|---|---|---|
| Crystal system | 六方晶系（三方晶系） | 斜方晶系 |
| Pleochroism | 弱〜中（ピンク・淡ピンク） | 中（ピンク・無色） |
| Chelsea filter | pink / red | pink |
| UV (long-wave) | medium (red) | weak (orange) |
| UV (short-wave) | weak (red) | inert |
ObservationOBSERVATION
◆Sapphire is harder (Mohs 9), heavier (SG ~4.0), and has higher RI (~1.76); pink sapphire also shows clear at 10× and stronger dichroism.
Color categoriesCATEGORIES
A: Natural Pink Sapphire
Red / pink
B: Pink Topaz
Red / pink
DISTINGUISHING TOOLS · 3 ITEMS
Distinguishing tools
Tools that decide between Natural Pink Sapphire and Pink Topaz 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.