Boracite
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Physical & Optical Properties
Mohs Hardness
| Mohs | Reference mineral | Boracite |
|---|---|---|
| 1 | Talc | |
| 2 | Gypsum | |
| 3 | Calcite | |
| 4 | Fluorite | |
| 5 | Apatite | |
| 6 | Orthoclase | |
| 7 | Quartz | ● |
| 8 | Topaz | |
| 9 | Corundum | |
| 10 | Diamond |
Crystal System
Value & Market
Where to Buy Boracite
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About Boracite
Boracite is a magnesium borate mineral forming small, sharp, pseudo-cubic crystals typically in colorless, white, or pale green to blue-green tones within evaporite deposits. Notably, boracite is pyroelectric and piezoelectric, and its crystals transform from cubic to orthorhombic symmetry below 265°C. Rare transparent specimens from Stassfurt, Germany, and Otis, Louisiana are occasionally faceted as curiosity collector gems.
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Jewelry Use
Suitable for daily wear