Rock Identifier

Category

Mineral And Glass

Browse mineral and glass specimens identified by the Rock Identifier community.

Learn about Mineral And Glass in the encyclopedia

Sideromelane

Black Obsidian

Maskelynite

Tachylite

Obsidian

Hyalite Opal

Perlite

Opalite

Macusanite

Pink Obsidian

Goldstone

Glauconite

Green Aventurine (Tumbled) (Silicon Dioxide with Fuchsite Inclusion (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Green Aventurine (Tumbled)

Silicon Dioxide with Fuchsite Inclusion (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Milky quartz (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz

Quartz, silicon dioxide (SiO₂)

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite) — mineral

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Tumbled Aventurine (SiO2 (Quartz with Fuchsite inclusions)) — mineral

Tumbled Aventurine

SiO2 (Quartz with Fuchsite inclusions)

Yellow Aventurine (Silicon Dioxide with inclusions (SiO2 + Muscovite/Fuchsite)) — mineral

Yellow Aventurine

Silicon Dioxide with inclusions (SiO2 + Muscovite/Fuchsite)

Green Sheen Obsidian (Volcanic Glass (SiO2 with microscopic inclusions)) — igneous

Green Sheen Obsidian

Volcanic Glass (SiO2 with microscopic inclusions)

Ruby / Red Corundum (Al2O3 (Aluminum Oxide with Chromium trace)) — gemstone

Ruby / Red Corundum

Al2O3 (Aluminum Oxide with Chromium trace)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz geode or drusy quartz cluster (Quartz (silicon dioxide, SiO₂), likely microcrystalline quartz lining a cavity) — mineral

Quartz geode or drusy quartz cluster

Quartz (silicon dioxide, SiO₂), likely microcrystalline quartz lining a cavity

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Obsidian (Volcanic Glass (SiO2 + impurities)) — igneous

Obsidian

Volcanic Glass (SiO2 + impurities)

Sandstone (Ferruginous) (Arenite (Fe-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich)

Sandstone with Iron Oxide Staining (Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone with Iron Oxide Staining

Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)

Sandstone/Quartzite (Sedimentary Rock (composed mainly of SiO2)) — sedimentary

Sandstone/Quartzite

Sedimentary Rock (composed mainly of SiO2)

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

Quartz (Smoky/Clear variety)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Milky quartz (quartz-rich fragment) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (quartz-rich fragment)

Quartz, silicon dioxide (SiO₂)

Quartz (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (River Pebble)

Silicon Dioxide (SiO2)

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

Quartz (Common or Milky Quartz)

Silicon Dioxide (SiO2)

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

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Clear Quartz Crystal Cluster (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Faceted Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — gemstone

Faceted Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Quartz in Matrix (possibly Basalt or Siltstone host) (Silicon Dioxide (SiO2) in Host Rock) — mineral

Quartz in Matrix (possibly Basalt or Siltstone host)

Silicon Dioxide (SiO2) in Host Rock

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Quartz (Granular Milky Quartz fragment)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon dioxide (SiO2)) — mineral

Milky Quartz

Silicon dioxide (SiO2)

Red Obsidian (Volcanic Glass (Amorphous SiO2)) — igneous

Red Obsidian

Volcanic Glass (Amorphous SiO2)

Quartz / Quartzite Pebble (Silicon Dioxide (SiO2)) — metamorphic

Quartz / Quartzite Pebble

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)