Sapphire vs Morganite
Sapphire is harder (Mohs 9) than Morganite (Mohs 7.5–8), so it resists scratching better.
Sapphire has the higher refractive index (1.762–1.770 vs 1.583–1.590), which a refractometer can use to separate them.
Sapphire is denser (SG 4 vs 2.8); a sapphire of the same size weighs about 43% more.
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| Property | Sapphire | Morganite |
|---|---|---|
| Species / material | Corundum | Beryl |
| Mohs hardness | 9 | 7.5–8 |
| Refractive index | 1.762–1.770 | 1.583–1.590 |
| Specific gravity | 4 | 2.8 |
| Crystal system | Trigonal | Hexagonal |
| Birefringence | 0.008–0.010 | 0.008–0.009 |
Values are typical ranges from standard gemmological references; individual stones can vary.
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