Morganite vs Cubic zirconia
Cubic zirconia is harder (Mohs 8–8.5) than Morganite (Mohs 7.5–8), so it resists scratching better.
Cubic zirconia has the higher refractive index (2.15–2.18 vs 1.583–1.590), which a refractometer (over-the-limit reading) can use to separate them.
Cubic zirconia is denser (SG 5.8 vs 2.8); a cubic zirconia of the same size weighs about 107% more.
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| Property | Morganite | Cubic zirconia |
|---|---|---|
| Species / material | Beryl | Synthetic zirconium oxide |
| Mohs hardness | 7.5–8 | 8–8.5 |
| Refractive index | 1.583–1.590 | 2.15–2.18 |
| Specific gravity | 2.8 | 5.8 |
| Crystal system | Hexagonal | Cubic |
| Birefringence | 0.008–0.009 | None (isotropic) |
Values are typical ranges from standard gemmological references; individual stones can vary.
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