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Chrome DiopsideVSNatural Emerald
Side-by-side comparison of physical properties, fluorescence, and crystal system — to identify by observation.
Decisive distinctionsDECISIVE
- ◎ is higher in Chrome Diopside, giving a numerical distinguishing point.
- ◎ is higher in Chrome Diopside, giving a numerical distinguishing point.
- ◎ is higher in Natural Emerald, giving a numerical distinguishing point.
- ◎ is higher in Chrome Diopside, 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: Chrome Diopside | B: Natural Emerald | Verdict |
|---|---|---|---|
| Refractive index (RI) | 1.664–1.730 | 1.577–1.583 | A higher |
| Specific gravity (SG) | 3.22–3.38 | 2.67–2.78 | A higher |
| Mohs hardness | 5.5–6.0 | 7.5–8.0 | B higher |
| Birefringence | 0.030 | 0.005 | A higher |
| Dispersion | — | — | — |
Optics & fluorescenceOPTICS & UV
| Property | A: Chrome Diopside | B: Natural Emerald |
|---|---|---|
| Crystal system | 単斜晶系 | 六方晶系 |
| Pleochroism | 中（緑・黄緑） | 強（緑・青緑） |
| Chelsea filter | red / pink | red / pink |
| UV (long-wave) | inert | weak (red) |
| UV (short-wave) | inert | inert |
ObservationOBSERVATION
◆nclusions and weak-to-medium red LW ; chrome diopside is softer (5.5–6), shows clear at 10×, and is inert under UV.
Color categoriesCATEGORIES
A: Chrome Diopside
Green
B: Natural Emerald
Green
DISTINGUISHING TOOLS · 3 ITEMS
Distinguishing tools
Tools that decide between Chrome Diopside and Natural Emerald 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.