| Name | Prehnite |
| Class | Semi-precious |
| Category | Phyllosilicate |
| Crystal system | Orthorhombic |
| Chemical composition | Calcium and aluminum silicate (Ca₂Al(AlSi₃O₁₀)(OH)₂) |
| Hardness (Mohs scale) | 6 to 6.5 |
| Transparency | Translucent to transparent |
| Geographical origin | South Africa, Australia, China, Scotland, United States, France |






















































































































































































































