Ferruginous Quartz
Silicon Dioxide with Iron Oxide Inclusions (SiO2)
mineral
Category
Mineral (Gemstone)
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Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2(SiO3)6)
gemstone
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sugilite
KNa2(Fe,Mn,Al)2Li3Si12O30
mineral
Carnelian
Chalcedony (SiO2) with Iron Oxide impurities
mineral
Prasiolite (Green Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with Fe2+ impurities)
mineral
Blue Chalcedony
Chalcedony (SiO2)
mineral
Amazonite
Microcline (KAlSi3O8)
mineral
Amazonite
Microcline (KAlSi3O8) with Trace Elements
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Amethyst (Quartz)
Amethyst (Silicon Dioxide with Iron impurities, SiO2)
mineral
Amazonite
K(AlSi3O8)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium
mineral
Peach Moonstone
Orthoclase (KAlSi3O8)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Sunstone
Oligoclase (Feldspar variety), (Na,Ca)(Si,Al)4O8
mineral
Chrysocolla in Quartz (Quantum Quattro variant)
Hydrated copper silicates (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) often mixed with SiO2
mineral
Paraiba Tourmaline
Elbaite Tourmaline (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) - Copper-bearing
mineral
Amazonite
Amazonite (KAlSi3O8, a variety of Microcline)
mineral
Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
mineral
Amazonite (with smoky quartz/feldspar inclusions)
K(AlSi3O8), Microcline (Tectosilicate)
mineral
Blue Apatite
Fluorapatite / Ca5(PO4)3F
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium and/or Vanadium impurities
mineral
Amazonite
Microcline (KAlSi3O8)
mineral
Amethyst
Crystalline Quartz (SiO2 with iron impurities)
mineral
Kunzite (Spodumene)
Spodumene (LiAlSi2O6)
mineral
Smoky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chrysocolla in Matrix
Chrysocolla (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Amethyst (as seen in jewelry)
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst Quartz
Amethyst (Silicon Dioxide, SiO2)
mineral
Amazonite
K(AlSi3O8), Microcline
mineral
Amethyst (Pale/Light Variety)
Quartz (Silicon Dioxide) with Iron impurities - SiO2
mineral
Red Breccia Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary