
Physical & Chemical Properties
| Name | Andalusite |
|---|---|
| Scientific Name | Andalusite |
| Mineral Group | Silicate Mineral |
| Hardness (Mohs) | 6.5 – 7.5 |
| Color | Green, brown, yellow, reddish (multi-color due to pleochroism) |
| Origin | Spain, Brazil, Sri Lanka, Russia, USA |
| Chemical Formula | Al₂SiO₅ |
| Crystal System | Orthorhombic |
|---|---|
| Specific Gravity | 3.1 – 3.2 |
| Birthstone | Not a traditional |
| Refractive Index | 1.63 – 1.65 |
| Optical Character | Biaxial (+) |
| Dispersion | Low to moderate |
| Major Sources | Spain (type locality), Brazil, Sri Lanka, Russia, USA |
| Treatments | untreated |
| Price Range | $50 – $500 |
| Care Instructions | Avoid harsh chemicals and ultrasonic cleaners. Clean with mild soap and water. Store separately to prevent scratches. |
Welcome Back 👋
Sign in to access your account and continue where you left off.
Welcome aboard 🚀
Create your account to access everything you need.