Biotite Mica
K(Mg, Fe)3(AlSi3O10)(F, OH)2
mineral
Category
Metamorphic And Igneous
Browse metamorphic and igneous specimens identified by the Rock Identifier community.
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Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
K2 Jasper (K2 Stone)
Azurite in Granite / Quartzite
metamorphic
Amazonite
K(AlSi3O8)
mineral
Pink Calcite
Calcium Carbonate (CaCO3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Green Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions
mineral
Quartz with Iron Oxide Inclusions
Silicon Dioxide (SiO2)
mineral
Ruby (in a ring setting)
Corundum (Al2O3:Cr)
gemstone
Rutilated Quartz
Quartz with Rutile inclusions (SiO2 with TiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Black Sapphire
Corundum (Al2O3)
gemstone
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Ruby and Sapphire Cluster Ring
Corundum (Al2O3)
gemstone
Rutilated Quartz
Rutile in Quartz (SiO2 with TiO2 inclusions)
mineral
Dearest Ring (Gemstones)
Mixed Gemstones: Diamond (C), Emerald (Be3Al2Si6O18), Amethyst (SiO2), Ruby (Al2O3), Sapphire (Al2O3), Topaz (Al2SiO4(F,OH)2)
mineral
Quartz Pebble (Smoky Quartz / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz Vein Rock
Silicon Dioxide (SiO2)
mineral
Rutilated Quartz (with Garnet pendant)
Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions
mineral
Tumbled black tourmaline
Schorl tourmaline, NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Quartz
Silicon Dioxide (SiO2) with fibrous inclusions (such as tourmaline, magnesio-riebbeckite, or crocidolite)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Green Aventurine (Tumbled)
Silicon Dioxide (Quartz with inclusions, SiO2)
mineral
Blue Sapphire
Corundum (Al2O3)
gemstone
Blue Aventurine
Quartz (SiO2) with inclusions
mineral
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Gold
Native Gold (Au)
mineral
Prasiolite (Green Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Black Diamond / Black Sapphire
Carbon (C) or Corundum (Al2O3)
mineral
Emerald
Beryl (Be3Al2(SiO3)6)
gemstone
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
mineral
Corundum (Sapphire in Matrix)
Aluminum Oxide (Al2O3)
mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Emerald
Beryl (Be3Al2Si6O18 with chromium and vanadium impurities)
gemstone
Yellow Aventurine
Quartz with inclusion minerals (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Ruby (Cabochon)
Corundum (Al2O3)
gemstone