Tourmaline Group
Tourmalines are complex borosilicate minerals known for their wide range of colors. They are popular gemstones and exhibit interesting electrical properties.
11 specimens starting with "F" (of 18 total)
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Feruvite
Hardness: 7
Fluor-buergerite
Hardness: 7
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Fluor-dravite
Hardness: 7
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Fluor-elbaite
Fluor-liddicoatite
Hardness: 7.5
Fluor-liddicoatite
Hardness: 7.5
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Fluor-schorl
Hardness: 7
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Fluor-tsilaisite
Hardness: 7
Fluor-uvite
Hardness: 7.5
Fluor-uvite
Hardness: 7.5
Foitite
Hardness: 7
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