Rock Identifier

Community gallery

All rocks & minerals

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

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

mineral
Almandine Garnet (Almandine (Fe3Al2(SiO4)3)) — mineral

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

mineral
Quartz (Milky or Smoky Quartz Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Smoky Quartz Pebble)

Silicon Dioxide (SiO2)

mineral
Milky or Greenish Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Milky or Greenish Quartz Pebble

Silicon Dioxide (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

sedimentary
Amethyst (Silicon Dioxide (SiO2)) — mineral

Amethyst

Silicon Dioxide (SiO2)

mineral
Blue Sapphire (Corundum (Al2O3) with traces of Iron and Titanium) — mineral

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

mineral
Turquoise (Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O

mineral
Quartzite (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Chert (Silicon dioxide (SiO2) - Microcrystalline quartz) — Sedimentary

Chert

Silicon dioxide (SiO2) - Microcrystalline quartz

Sedimentary
Chert (Chert (Microcrystalline Quartz)) — sedimentary

Chert

Chert (Microcrystalline Quartz)

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

Chert (Chalcedony)

Microcrystalline Quartz (SiO2)

sedimentary
Tiger Iron (Tiger Iron (Composition: SiO2, Fe2O3, Fe3O4)) — metamorphic

Tiger Iron

Tiger Iron (Composition: SiO2, Fe2O3, Fe3O4)

metamorphic
Yellow Septarian (Dragon Stone) (Septarian Concretion (Calcite, Aragonite, and Limestone)) — sedimentary

Yellow Septarian (Dragon Stone)

Septarian Concretion (Calcite, Aragonite, and Limestone)

sedimentary
Muscovite Mica (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

mineral
Mica Schist with Garnet (Garnetiferous Mica Schist) — metamorphic

Mica Schist with Garnet

Garnetiferous Mica Schist

metamorphic
Chrysotile Asbestos (Chrysotile [Mg3Si2O5(OH)4]) — mineral

Chrysotile Asbestos

Chrysotile [Mg3Si2O5(OH)4]

mineral
Carborundum (Silicon Carbide) (Silicon Carbide (SiC)) — mineral

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

mineral
Septarian Nodule (Septarian Concretion (CaCO3 / Fe2O3 / SiO2)) — sedimentary

Septarian Nodule

Septarian Concretion (CaCO3 / Fe2O3 / SiO2)

sedimentary
Bumblebee Jasper (Carbonate-rich volcanic rock containing Sulfur and Arsenic (Realgar/Orpiment)) — sedimentary

Bumblebee Jasper

Carbonate-rich volcanic rock containing Sulfur and Arsenic (Realgar/Orpiment)

sedimentary
Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

sedimentary
Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Quartzite (Quartzite (Mostly SiO2)) — metamorphic

Quartzite

Quartzite (Mostly SiO2)

metamorphic
Schist (Mica Schist) — metamorphic

Schist

Mica Schist

metamorphic
Quartz with Mafic Inclusions (Silicon Dioxide (SiO2) with host igneous matrix) — igneous

Quartz with Mafic Inclusions

Silicon Dioxide (SiO2) with host igneous matrix

igneous
Quartz with Basalt inclusion (Silicon Dioxide (SiO2) with mafic silicate rock) — igneous and sedimentary/metamorphic mix

Quartz with Basalt inclusion

Silicon Dioxide (SiO2) with mafic silicate rock

igneous and sedimentary/metamorphic mix
Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

metamorphic
Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Carnelian (Chalcedony (SiO2) with Iron Oxide inclusions) — mineral

Carnelian

Chalcedony (SiO2) with Iron Oxide inclusions

mineral
Quartz Vein / Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

mineral
Chert (often called Jasper or River Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (often called Jasper or River Pebble)

Microcrystalline Quartz (SiO2)

sedimentary
Quartzite (Quartzite (mostly SiO2)) — metamorphic

Quartzite

Quartzite (mostly SiO2)

metamorphic
Chert (Silica Pebble) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (Silica Pebble)

Chert (Microcrystalline Quartz, SiO2)

sedimentary
Chert Nodules (with Quartz Inclusions) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Nodules (with Quartz Inclusions)

Microcrystalline Quartz (SiO2)

sedimentary
Citrine (Citrine (Silicon Dioxide, SiO2)) — mineral

Citrine

Citrine (Silicon Dioxide, SiO2)

mineral
Quartzite (Metamorphic Quartz (SiO2)) — metamorphic

Quartzite

Metamorphic Quartz (SiO2)

metamorphic
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Ironstone Concretion (Ferruginous Sandstone / Iron-rich Sedimentary Rock) — sedimentary

Ironstone Concretion

Ferruginous Sandstone / Iron-rich Sedimentary Rock

sedimentary
Quartzite (Iron-stained) (Quartzite (SiO2 with Iron oxide inclusions)) — metamorphic

Quartzite (Iron-stained)

Quartzite (SiO2 with Iron oxide inclusions)

metamorphic