Diamond vs Jadeite jade
Diamond is harder (Mohs 10) than Jadeite jade (Mohs 6.5–7), so it resists scratching better; Jadeite jade is softer than quartz dust (7) and needs more care in everyday rings.
Diamond has the higher refractive index (2.417 vs 1.66), which a refractometer (over-the-limit reading) can use to separate them.
Diamond is denser (SG 3.52 vs 3.34); a diamond of the same size weighs about 5% more.
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| Property | Diamond | Jadeite jade |
|---|---|---|
| Species / material | Diamond (carbon) | Jadeite (pyroxene) |
| Mohs hardness | 10 | 6.5–7 |
| Refractive index | 2.417 | 1.66 |
| Specific gravity | 3.52 | 3.34 |
| Crystal system | Cubic | Monoclinic (aggregate) |
| Birefringence | None (isotropic) | Not usually measurable |
Values are typical ranges from standard gemmological references; individual stones can vary.
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