Haüyne
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Physical & Optical Properties
Mohs Hardness
| Mohs | Reference mineral | Haüyne |
|---|---|---|
| 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 Haüyne
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About Haüyne
Haüyne is a rare feldspathoid silicate mineral occurring in vivid azure to sky-blue colors derived from sulfate-containing sodalite-group chemistry, with a vitreous luster and strong dispersion. It is found as small grains and crystals in silica-undersaturated volcanic rocks, most notably in the Eifel region of Germany and in volcanic ejectamenta from Monte Somma-Vesuvius, Italy. Faceted haüyne gems are highly coveted collector rarities due to the extraordinary intensity of their blue color and the scarcity of clean material.