Rock Identifier

Category

Man Made Glass (Not A Natural Rock Or Mineral)

Browse man made glass (not a natural rock or mineral) specimens identified by the Rock Identifier community.

Quartz (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Gneiss (Gneiss (a type of metamorphic rock)) — Metamorphic Rock

Gneiss

Gneiss (a type of metamorphic rock)

Metamorphic Rock

Snowflake Obsidian (Vitreous volcanic silicate rock (SiO2) with Spherulite inclusions) — igneous

Snowflake Obsidian

Vitreous volcanic silicate rock (SiO2) with Spherulite inclusions

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

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Red Tiger's Eye (SiO2 (Silicon Dioxide) - Pseudomorph of Quartz after Crocidolite) — mineral

Red Tiger's Eye

SiO2 (Silicon Dioxide) - Pseudomorph of Quartz after Crocidolite

Rose Quartz (Rose Quartz (SiO2)) — Mineral

Rose Quartz

Rose Quartz (SiO2)

Obsidian / Volcanic Glass (Obsidian (principally SiO2, usually 70% or more)) — igneous

Obsidian / Volcanic Glass

Obsidian (principally SiO2, usually 70% or more)

Chert (Jasper/Flint variation) (Chert (SiO2)) — sedimentary

Chert (Jasper/Flint variation)

Chert (SiO2)

Druzy Quartz on Chert/Siltstone (Silicon Dioxide (SiO2) on Microcrystalline Silica/Siltstone matrix) — sedimentary

Druzy Quartz on Chert/Siltstone

Silicon Dioxide (SiO2) on Microcrystalline Silica/Siltstone matrix

Ferruginous Sandstone (Arenite with Iron-oxide cement) — sedimentary

Ferruginous Sandstone

Arenite with Iron-oxide cement

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Ruby (Corundum (Al2O3 with Chromium traces)) — mineral

Ruby

Corundum (Al2O3 with Chromium traces)

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

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Yellow Quartzite (Quartzite (SiO2)) — metamorphic

Yellow Quartzite

Quartzite (SiO2)

Dyed Pink Agate Slice (Cryptocrystalline variety of Quartz (SiO2)) — mineral

Dyed Pink Agate Slice

Cryptocrystalline variety of Quartz (SiO2)

Black Pearl (Tahitian-style Cultured Pearl) (Calcium Carbonate (Aragonite) with Conchiolin (CaCO3)) — mineral

Black Pearl (Tahitian-style Cultured Pearl)

Calcium Carbonate (Aragonite) with Conchiolin (CaCO3)

Amber (Succinite (Organic Mineraloid) - C10H16O) — mineral

Amber

Succinite (Organic Mineraloid) - C10H16O

Lapis Lazuli (Tumbled Specimen) (Lapis Lazuli (Aggregate rock containing Lazurite: (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)) — metamorphic

Lapis Lazuli (Tumbled Specimen)

Lapis Lazuli (Aggregate rock containing Lazurite: (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

Corundum (Ruby/Sapphire crystal) (Al2O3 (Aluminum Oxide)) — mineral

Corundum (Ruby/Sapphire crystal)

Al2O3 (Aluminum Oxide)

Quartzite River Rock (Quartzite (primarily SiO2)) — metamorphic

Quartzite River Rock

Quartzite (primarily SiO2)

Banded Rock (likely Quartz-rich) (Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals) — Mineral

Banded Rock (likely Quartz-rich)

Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals

Diamond (in jewelry) (Carbon (C)) — mineral

Diamond (in jewelry)

Carbon (C)

Dyed Pink Agate (Crackled) (Silicon Dioxide (SiO2) - Chalcedony variety) — mineral

Dyed Pink Agate (Crackled)

Silicon Dioxide (SiO2) - Chalcedony variety

Blue Dyed Agate (Chalcedony (SiO2) with artificial pigment) — mineral

Blue Dyed Agate

Chalcedony (SiO2) with artificial pigment

Diamond (in jewelry setting) (Diamond (Carbon, C)) — mineral

Diamond (in jewelry setting)

Diamond (Carbon, C)

Bauxite (Bauxite (principal ore of aluminum, primarily Al(OH)3)) — sedimentary

Bauxite

Bauxite (principal ore of aluminum, primarily Al(OH)3)

Connemara Marble (Ophiocalcite (Serpentinitic Marble)) — metamorphic

Connemara Marble

Ophiocalcite (Serpentinitic Marble)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Yellow Quartzite (River Pebble) (Quartzite (primarily SiO2)) — metamorphic

Yellow Quartzite (River Pebble)

Quartzite (primarily SiO2)

Chert (Siliceous Mudstone variant) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Siliceous Mudstone variant)

Microcrystalline quartz (SiO2)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Quartzite (Quartzite (mostly SiO2)) — metamorphic

Quartzite

Quartzite (mostly SiO2)

Pearl (Imitation or Cultured) (Calcium Carbonate (Aragonite/Calcite) - CaCO3) — Mineraloid (Organic)

Pearl (Imitation or Cultured)

Calcium Carbonate (Aragonite/Calcite) - CaCO3

Mineraloid (Organic)

Jasper (likely Lake Superior Jasper) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary (silica-rich mineral variety)

Jasper (likely Lake Superior Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary (silica-rich mineral variety)

Quartzite Pebbler (Quartzite (mainly SiO2)) — metamorphic

Quartzite Pebbler

Quartzite (mainly SiO2)

Amber (Fossilized Tree Resin (Succinate)) — mineral

Amber

Fossilized Tree Resin (Succinate)

Black Spinel (Magnesium Aluminum Oxide (MgAl2O4)) — mineral

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Quartz (likely a weathered/tumbled piece) (Quartz (SiO₂)) — Mineral

Quartz (likely a weathered/tumbled piece)

Quartz (SiO₂)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

Rhyolite (Rhyolite (High-silica volcanic rock)) — igneous

Rhyolite

Rhyolite (High-silica volcanic rock)