Exceptionally rare in carved stone. Fluorescent mineral.
To know more about mineralogy of the willemite see mindat.org->
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Willemite
- Translations : Willemiet, Willemine, Willemit, Vilemitas, Виллемит, 硅锌矿, Willemita, Belgita
- Synonym : Belgite, Hebertine, Villemite, Wilhelmite
- Etymology : In honor to WILHELM 1st, king of the Netherlands (1772-1843).
- Discovery: 1830 by Levy
- Type localityFranklin, Sussex, New Jersey, USA
Gemological data
- Chemical formula : Zn2SiO4
- Hardness (Mohs) : 5.5
- Density : 3.9 - 4.2
- Refractive index : nω = 1.691 - 1.694 nε = 1.719 - 1.725
- Crystal system : Trigonal
- Group : Phenakite
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- Willemite
