Black Tourmaline (Schorl)
Schorl (Complex sodium iron aluminum borosilicate)
mineral
Category
Igneous And Metamorphic
Browse igneous and metamorphic specimens identified by the Rock Identifier community.
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Smoky Quartz (with Iron Inclusions)
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Hematite
Hematite (Fe2O3)
Mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)
Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Milky Quartz with Iron Staining
Quartz (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
gemstone
Quartz Pebble (Iron-Stained Quartz)
Silicon Dioxide (SiO2)
mineral
Strawberry Quartz (Aventurine)
Silicon Dioxide with Hematite/Lepidocrocite inclusions (SiO2)
mineral
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Labradorite
(Na, Ca)(Si, Al)4O8
mineral
Common Opal
SiO2·nH2O (Hydrated Silicon Dioxide)
mineraloid
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Amethyst variety)
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Peacock Ore
Bornite (Cu5FeS4)
mineral
Sunstone Quartz / Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Mixed Mineral Collection
Multi-mineral Assemblage (Quartz, Jasper, Obsidian, Pyrite, etc.)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Biotite on Quartz
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2) and Quartz (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
gemstone
Peach Moonstone
Orthoclase (Potassium Aluminum Silicate, KAlSi3O8)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral