Blue Calcite
Calcium Carbonate (CaCO3)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Blue Calcite
Calcium Carbonate (CaCO3)
Carnelian
Chalcedony (SiO2) with iron oxide impurities
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)
Rhodochrosite
Manganese Carbonate (MnCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Chert (varietal known as Jasper or Flint)
Silicon Dioxide (SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Hematite (beads)
Hematite (Fe₂O₃)
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Pyrite
Iron Sulfide (FeS2)
Chrysocolla
Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
Moss Agate
Chalcedony (Silicon Dioxide - SiO2) with inclusions
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
Chrysocolla and Azurite in Matrix
Hydrated copper phyllosilicate (Chrysocolla - Cu2H2Si2O5(OH)4) and Copper carbonate (Azurite - Cu3(CO3)2(OH)2)
Chert (Iron-rich variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Jasper with Agate Inclusions
Silicon Dioxide (SiO2)
Amazonite
K(AlSi3O8) - Potassium Feldspar (Microcline variant)
Yellow Calcite
Calcium Carbonate (CaCO3)
Amazonite (Amazon Stone)
Tectosilicate Microcline (KAlSi3O8)
Smoky Quartz
Silicon Dioxide (SiO2)
Rough Precious Opal
Hydrated Silica (SiO2·nH2O)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amazonite
Potassium Feldspar (Microcline) - K(AlSi3O8)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) with inclusions of Iron Oxide or Chlorite
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
Granite
Granite (Silicic Plutonic Rock)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Sandstone (Ferruginous/Red Sandstone)
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
Citrine Quartz
Silicon Dioxide (SiO2) with ferric iron impurities
Labradorite/Larvikite
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
Chalcedony (Botryoidal Agate)
Silicon Dioxide (SiO2)
Clear Quartz Crystal (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Tiger's Eye (Rough)
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)
Citrine
Silicon Dioxide (SiO2)
Moonstone
Feldspar (Orthoclase with Albite), (K,Na)AlSi3O8
Alexandrite
Chrysoberyl (BeAl2O4 with Chromium impurities)
Milky Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Blue Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)