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JadeiteVSNephrite
Side-by-side comparison of physical properties, fluorescence, and crystal system — to identify by observation.
Decisive distinctionsDECISIVE
- ◎ is higher in Jadeite, giving a numerical distinguishing point.
- ◎ is higher in Jadeite, giving a numerical distinguishing point.
- ◎ is higher in Nephrite, 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: Jadeite | B: Nephrite | Verdict |
|---|---|---|---|
| Refractive index (RI) | 1.652–1.688 | 1.600–1.640 | A higher |
| Specific gravity (SG) | 3.30–3.38 | 2.90–3.03 | A higher |
| Mohs hardness | 6.5–7.0 | 6.0–6.5 | Overlap |
| Birefringence | 0.012 | 0.027 | B higher |
| Dispersion | — | — | — |
Optics & fluorescenceOPTICS & UV
| Property | A: Jadeite | B: Nephrite |
|---|---|---|
| Crystal system | 単斜晶系（多結晶） | 単斜晶系（多結晶） |
| Pleochroism | — | — |
| Chelsea filter | inert | — |
| UV (long-wave) | inert | — |
| UV (short-wave) | inert | inert |
ObservationOBSERVATION
◆Nephrite often shows weak bluish-white LW , lower density (~2.95 vs ~3.33), and a finer, more felted fiber structure; jadeite shows a coarser granoblastic 'orange-peel' texture and is denser and harder.
Color categoriesCATEGORIES
A: Jadeite
Green
B: Nephrite
Green
DISTINGUISHING TOOLS · 3 ITEMS
Distinguishing tools
Tools that decide between Jadeite and Nephrite 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.