Villiaumite
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Physical & Optical Properties
Mohs Hardness
| Mohs | Reference mineral | Villiaumite |
|---|---|---|
| 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 Villiaumite
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About Villiaumite
Villiaumite is a rare sodium fluoride mineral that forms vivid carmine-red to deep reddish-orange cubic crystals with a vitreous to silky luster in alkaline igneous rocks. First described from the Los Archipelago of Guinea in West Africa, it is also found at Mont Saint-Hilaire, Quebec, and in the Kola Peninsula, Russia. Its intense red color is visually spectacular, though sensitivity to moisture and extreme rarity limit its use as a gemstone.