Rock Identifier

Community gallery

All rocks & minerals

Every specimen the Rock Identifier community has discovered, from desert agates to deep-sea basalts.

Citrine Quartz (Crystalline Quartz (SiO2) with iron impurities) — mineral

Citrine Quartz

Crystalline Quartz (SiO2) with iron impurities

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Amber (Succinite (C10H16O)) — mineral

Amber

Succinite (C10H16O)

Gold Nugget / Gold Flakes (Native Gold (Au)) — mineral

Gold Nugget / Gold Flakes

Native Gold (Au)

Gold Nuggests (Native Gold (Au)) — mineral

Gold Nuggests

Native Gold (Au)

Blue Lace Agate (Silicon Dioxide (SiO2)) — mineral

Blue Lace Agate

Silicon Dioxide (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Raw Topaz (Aluminum Silicate Fluoride Hydroxide, Al2SiO4(F,OH)2) — mineral

Raw Topaz

Aluminum Silicate Fluoride Hydroxide, Al2SiO4(F,OH)2

Quartz (Milky/Clear variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2) with natural radiation induced color centers) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with natural radiation induced color centers

Strawberry Quartz (Quartz with Hematite inclusions) (Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)) — mineral

Strawberry Quartz (Quartz with Hematite inclusions)

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Carnelian (Carnelian Agate) (Silicon dioxide (SiO2)) — mineral

Carnelian (Carnelian Agate)

Silicon dioxide (SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Quartz (Rutilated) (Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions) — mineral

Quartz (Rutilated)

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

Gray Slate River Stone (Slate) — metamorphic

Gray Slate River Stone

Slate

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

Pink Quartz (likely dyed) (Silicon Dioxide (SiO2)) — mineral

Pink Quartz (likely dyed)

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Blue Dyed Agate Geode Slice (Chalcedony (Silicon Dioxide, SiO2) with artificial cobalt/iron-based dye) — mineral

Blue Dyed Agate Geode Slice

Chalcedony (Silicon Dioxide, SiO2) with artificial cobalt/iron-based dye

Onyx Agate (Brazilian Agate) (Silicon Dioxide (SiO2)) — mineral

Onyx Agate (Brazilian Agate)

Silicon Dioxide (SiO2)

Quartz Geode with Chalcedony (Silicon Dioxide (SiO2) in Geode Form) — sedimentary

Quartz Geode with Chalcedony

Silicon Dioxide (SiO2) in Geode Form

Hematite (Iron Ore) (Iron(III) oxide (Fe2O3)) — mineral

Hematite (Iron Ore)

Iron(III) oxide (Fe2O3)

Green Jasper (Silicon dioxide (SiO2)) — sedimentary

Green Jasper

Silicon dioxide (SiO2)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Natural Pearl (Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3) — mineral

Natural Pearl

Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3

Pearl (Calcium Carbonate (CaCO3)) — mineral

Pearl

Calcium Carbonate (CaCO3)

Rose Quartz (Dyed) (Silicon Dioxide (SiO2) with trace impurities) — mineral

Rose Quartz (Dyed)

Silicon Dioxide (SiO2) with trace impurities

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Rose Quartz (Silicon dioxide (SiO2)) — mineral

Rose Quartz

Silicon dioxide (SiO2)

Fossiliferous Limestone (with Oyster Fossils) (Fossiliferous Calcarenite / Bivalve Mollusk Fossil) — sedimentary

Fossiliferous Limestone (with Oyster Fossils)

Fossiliferous Calcarenite / Bivalve Mollusk Fossil

Rose Quartz (Silicon Dioxide (SiO2) with Titanium/Manganese/Iron trace elements) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with Titanium/Manganese/Iron trace elements

Chert (Greenish-Grey variety) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Greenish-Grey variety)

Microcrystalline quartz (SiO2)

Mosasaur Jaw Fossil in Matrix (Mosasaurus (family Mosasauridae) in Phosphate Sandstone) — sedimentary

Mosasaur Jaw Fossil in Matrix

Mosasaurus (family Mosasauridae) in Phosphate Sandstone

Feldspar (Orthoclase) (Potassium Feldspar (KAlSi3O8)) — mineral

Feldspar (Orthoclase)

Potassium Feldspar (KAlSi3O8)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (likely Chalcedony or Chert) (Silicon Dioxide (SiO2)) — mineral

Quartz (likely Chalcedony or Chert)

Silicon Dioxide (SiO2)

Ammonite Fossil (Ammonoidea (typically preserved as Calcite or Aragonite)) — sedimentary

Ammonite Fossil

Ammonoidea (typically preserved as Calcite or Aragonite)

Quartz (Sunstone-like Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Sunstone-like Chalcedony)

Silicon Dioxide (SiO2)

Quartz (Citrine variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Citrine variety)

Silicon Dioxide (SiO2)

Chert (Jasper/Flint variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Yellow Chalcedony (Agate or Citrine Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony (Agate or Citrine Quartz)

Silicon Dioxide (SiO2)