Aquamarine vs Morganite
Aquamarine and Morganite have similar hardness (Mohs 7.5–8).
Both are varieties of Beryl; they differ mainly in colour, so standard tests (RI, SG) overlap.
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| Property | Aquamarine | Morganite |
|---|---|---|
| Species / material | Beryl | Beryl |
| Mohs hardness | 7.5–8 | 7.5–8 |
| Refractive index | 1.577–1.583 | 1.583–1.590 |
| Specific gravity | 2.72 | 2.8 |
| Crystal system | Hexagonal | Hexagonal |
| Birefringence | 0.005–0.009 | 0.008–0.009 |
Values are typical ranges from standard gemmological references; individual stones can vary.
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