Diamond vs Morganite
Diamond is harder (Mohs 10) than Morganite (Mohs 7.5–8), so it resists scratching better.
Diamond has the higher refractive index (2.417 vs 1.583–1.590), which a refractometer (over-the-limit reading) can use to separate them.
Diamond is denser (SG 3.52 vs 2.8); a diamond of the same size weighs about 26% more.
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| Property | Diamond | Morganite |
|---|---|---|
| Species / material | Diamond (carbon) | Beryl |
| Mohs hardness | 10 | 7.5–8 |
| Refractive index | 2.417 | 1.583–1.590 |
| Specific gravity | 3.52 | 2.8 |
| Crystal system | Cubic | Hexagonal |
| Birefringence | None (isotropic) | 0.008–0.009 |
Values are typical ranges from standard gemmological references; individual stones can vary.
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