| Property |
Alexandrite |
Bloodstone (Heliotrope) |
| Category |
Semi-Precious Gems |
Semi-Precious Gems |
| Primary Color |
various |
various |
| Mohs Hardness |
8.5 |
6.5–7.0 |
| Specific Gravity |
3.69 |
2.55 |
| Refractive Index |
1.739 |
1.53 |
| Crystal System |
Orthorhombic |
Trigonal |
| Luster |
— |
Waxy,Resinous |
| Chemical Formula |
— |
— |
| Price Tier |
Fine ($500-5,000/ct) |
Moderate ($50-500/ct) |
| Daily Wear |
نعم |
لا |
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