Gemstones with SG 4.25
2 gemstones have a specific gravity range that includes 4.25. Specific gravity measures density relative to water — a key diagnostic property for gem identification. Measured by hydrostatic weighing or heavy liquids.
| Gemstone | SG Range | RI Range | Crystal System | Hardness |
|---|---|---|---|---|
| Almandine Garnet | 3.93 – 4.30 | 1.770 – 1.830 | Cubic | 7–7.5 |
| Star Garnet | 3.93 – 4.30 | 1.770 – 1.830 | Cubic | 7–7.5 |