Morganite vs Opal
Morganite is harder (Mohs 7.5–8) than Opal (Mohs 5.5–6.5), so it resists scratching better; Opal is softer than quartz dust (7) and needs more care in everyday rings.
Morganite has the higher refractive index (1.583–1.590 vs 1.450), which a refractometer can use to separate them.
Morganite is denser (SG 2.8 vs 2.15); a morganite of the same size weighs about 30% more.
Advertisement
Ad space (in-content)
| Property | Morganite | Opal |
|---|---|---|
| Species / material | Beryl | Opal (hydrated silica) |
| Mohs hardness | 7.5–8 | 5.5–6.5 |
| Refractive index | 1.583–1.590 | 1.450 |
| Specific gravity | 2.8 | 2.15 |
| Crystal system | Hexagonal | Amorphous |
| Birefringence | 0.008–0.009 | None |
Values are typical ranges from standard gemmological references; individual stones can vary.
Test it yourself
More comparisons
Diamond vs MorganiteDiamond vs OpalRuby vs MorganiteRuby vs OpalSapphire vs MorganiteSapphire vs OpalEmerald vs MorganiteEmerald vs OpalAquamarine vs MorganiteAquamarine vs OpalMorganite vs AlexandriteMorganite vs SpinelMorganite vs TopazMorganite vs TourmalineMorganite vs Garnet (almandine)Morganite vs Peridot