Pyrite
Iron Sulfide (FeS2)
Category
Browse mineral (specifically a variety of quartz) specimens identified by the Rock Identifier community.
Pyrite
Iron Sulfide (FeS2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Jasper
Silicon Dioxide (SiO2)
Rainbow Moonstone (White Labradorite)
Labradorite (White varieties with Schiller effect), (Na,Ca)(Al,Si)4O8
Blue Topaz
Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2]
Pink Granite
Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)
Agate
Cryptocrystalline Silicon Dioxide (SiO2)
Quartz (Common Milky Quartz)
Silicon Dioxide (SiO2)
Yellow Chalcedony
Cryptocrystalline Quartz (SiO2)
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
Rose Quartz
SiO2 (Crystalline Quartz with trace inclusions)
Milky Quartz
Silicon Dioxide (SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Quartz (Druzy or Crystalline variety)
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Smoky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartzite (or Massive Quartz)
Silicon Dioxide (SiO2)
Quartz (Tumbled)
Silicon Dioxide (SiO2)
Pink Granite
Granite (rich in Potassium Feldspar / Orthoclase)
Rose Quartz
SiO2 (Silicon Dioxide)
Quartz (Milky/Common)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Red Jasper
Jasper (a variety of Chalcedony, SiO₂ with iron oxide inclusions)
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide with Iron Oxide (SiO2 with traces of Fe2O3/FeO(OH))
Faceted Clear Quartz
Crystalline Silicon Dioxide (SiO2)
Sandstone Concretion (Omar or Nut Rock)
Sedimentary Concretion (specifically an 'Omarolluk' or Omar)
Jasper with Quartz Vein
Microcrystalline quartz (SiO2) and chalcedony with a quartz vein
Green Jasper (Heliotrope / Bloodstone variety)
Silicon Dioxide (SiO₂)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Ferruginous Quartz
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Chalcedony on Matrix
Silicon Dioxide (SiO2)
Green Chert (Jasper)
Silicon Dioxide (SiO2)
Banded Calcite (often sold as Caribbean Calcite or Pink Calcite)
Calcium Carbonate (CaCO3)
Ironstone Concretion (Coprolite-like)
Goethite/Hematite Siderite Spheroid (FeCO3 or FeO(OH))
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
Clear Quartz
Silicon Dioxide (SiO2)