Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Silicate Variety)
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
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White Agate (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartz
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Carnelian
Carnelian (Silica, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Desert Rose
Gypsum (CaSO4·2H2O) or Barite (BaSO4) with Sand inclusions
mineral
Carnelian
Carnelian (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
SiO2 (Silicon Dioxide)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
SiO2 (Silicon Dioxide)
mineral
Gypsum (Selenite crystals in Halite/Clay matrix)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Specularite (Specular Hematite)
Iron Oxide (Fe2O3)
mineral
Sunstone
Oligoclase (Plagioclase Feldspar Group) - (Ca, Na)(Al, Si)4O8
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcite (CaCO3)
mineral
Quartz (Tumbled/Water-worn)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Smoky variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Serpentine
Serpentine-group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)
metamorphic
Jasper (Brown Iron-Rich Variety)
Silicon Dioxide (SiO2) with Fe2O3 (Iron Oxide/Crystalline Quartz)
sedimentary
Jasper (likely river-worn)
Silicon Dioxide (SiO2)
sedimentary
Quartz (Chatoyant or Milky variety)
Silicon Dioxide (SiO2)
mineral
Quartz (various varieties)
SiO₂ (Silicon Dioxide)
Mineral
Emerald
Beryl (variety Emerald), Be3Al2Si6O18 with Cr and/or V
Mineral
Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Blue Chalcedony (Tumbled)
Silicon Dioxide (SiO2)
mineral