| Property | Almandine | Coral |
|---|---|---|
| Category | Semi-Precious Gems | Organic Gems |
| Primary Color | various | various |
| Mohs Hardness | 7.0–7.5 | 3.0–4.0 |
| Specific Gravity | 3.95 | 2.6 |
| Refractive Index | 1.77 | 1.486 |
| Crystal System | Isometric | Trigonal |
| Luster | Vitreous | — |
| Chemical Formula | — | — |
| Price Tier | Moderate ($50-500/ct) | Budget (< $50/ct) |
| Daily Wear | Sí | No |