Garnet (almandine) vs Pearl
Garnet (almandine) is harder (Mohs 7–7.5) than Pearl (Mohs 2.5–4.5), so it resists scratching better; Pearl is softer than quartz dust (7) and needs more care in everyday rings.
Garnet (almandine) has the higher refractive index (1.790 vs 1.53–1.69), which a refractometer can use to separate them.
Garnet (almandine) is denser (SG 4.05 vs 2.71); a garnet (almandine) of the same size weighs about 49% more.
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| Property | Garnet (almandine) | Pearl |
|---|---|---|
| Species / material | Garnet | Organic (nacre) |
| Mohs hardness | 7–7.5 | 2.5–4.5 |
| Refractive index | 1.790 | 1.53–1.69 |
| Specific gravity | 4.05 | 2.71 |
| Crystal system | Cubic | Organic |
| Birefringence | None (isotropic) | Not applicable |
Values are typical ranges from standard gemmological references; individual stones can vary.
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