Tourmaline Group
Tourmalines are complex borosilicate minerals known for their wide range of colors. They are popular gemstones and exhibit interesting electrical properties.
18 specimens in this category
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Darrellhenryite
Hardness: 7
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Dravite
Hardness: 7
Elbaite
Hardness: 7.5
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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
Lucchesiite
Hardness: 7
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Luinaite-(oh)
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Uvite
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Watermelon Tourmaline
Hardness: 7 - 7.5
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