Sellaite
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Physical & Optical Properties
Mohs Hardness
| Mohs | Reference mineral | Sellaite |
|---|---|---|
| 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 Sellaite
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About Sellaite
A sellaite é um raro mineral de fluoreto de magnésio que forma prismas tetragonais incolores a brancos com um lustre vítreo a perláceo. Ocorre em depósitos evaporíticos e em rochas metamórficas de alta temperatura, sendo os exemplares mais notáveis provenientes de Itália, de onde o mineral recebeu o nome. A sua raridade e fragilidade relativa limitam o seu uso em joalharia, sendo maioritariamente apreciada por colecionadores.