Rock Identifier

Category

Man Made Glass

Browse man made glass specimens identified by the Rock Identifier community.

Learn about Man Made Glass in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Zincite

Mint Obsidian

Blue Obsidian

Green Obsidian

Crimson Obsidian

Cherry Obsidian

Violet Obsidian

Cobalt Blue Obsidian

Tangerine Obsidian

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Diamond (or Cubic Zirconia) (Carbon (C) or Zirconium Dioxide (ZrO2)) — gemstone

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Granite (Granite (a common term for a felsic intrusive igneous rock)) — igneous

Granite

Granite (a common term for a felsic intrusive igneous rock)

Basalt (Basalt (containing plagioclase, pyroxene, and olivine)) — igneous

Basalt

Basalt (containing plagioclase, pyroxene, and olivine)

Granite (Granite (Felsic intrusive igneous rock)) — igneous

Granite

Granite (Felsic intrusive igneous rock)

Gneiss (Gneiss (a rock type, not a specific mineral with a formula)) — Metamorphic Rock

Gneiss

Gneiss (a rock type, not a specific mineral with a formula)

Metamorphic Rock

Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment) (Quartz (SiO₂)) — Mineral

Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment)

Quartz (SiO₂)

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

Quartz (likely milky/gray variety) (Quartz (SiO₂)) — Mineral

Quartz (likely milky/gray variety)

Quartz (SiO₂)

Sandstone (Arenite) — Sedimentary

Sandstone

Arenite

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Quartz (likely a clear or rock crystal variety) (Quartz (SiO2 - Silicon Dioxide)) — Mineral

Quartz (likely a clear or rock crystal variety)

Quartz (SiO2 - Silicon Dioxide)

Crystal Quartz Beads (likely Clear Quartz) (Quartz (SiO₂)) — Mineral

Crystal Quartz Beads (likely Clear Quartz)

Quartz (SiO₂)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Fossilized Coral (Coquina/Limestone) (Cnidaria Anthozoa (Fossilized)) — sedimentary

Fossilized Coral (Coquina/Limestone)

Cnidaria Anthozoa (Fossilized)

Diamond (in a jewelry setting) (Cubic Carbon (C)) — mineral

Diamond (in a jewelry setting)

Cubic Carbon (C)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Sandstone (Arenite (SiO2 composition primarily)) — sedimentary

Sandstone

Arenite (SiO2 composition primarily)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Pearl (Aragonite (CaCO3 with conchiolin)) — mineral

Pearl

Aragonite (CaCO3 with conchiolin)

Pearl (Calcium Carbonate (CaCO3) with Conchiolin) — mineral

Pearl

Calcium Carbonate (CaCO3) with Conchiolin

Diamond (faceted) (Diamond (Pure Carbon, C)) — mineral

Diamond (faceted)

Diamond (Pure Carbon, C)

Lepidolite (likely) (K(Li,Al)3(Al,Si)4O10(F,OH)2 (Phyllosilicate mineral, part of the mica group)) — Mineral

Lepidolite (likely)

K(Li,Al)3(Al,Si)4O10(F,OH)2 (Phyllosilicate mineral, part of the mica group)

Pebble (likely Quartz or Chert) (SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.) — Sedimentary Rock

Pebble (likely Quartz or Chert)

SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.

Sedimentary Rock

Quartz (variety of colors) (SiO2 (Silicon Dioxide)) — Mineral

Quartz (variety of colors)

SiO2 (Silicon Dioxide)

Aquamarine and clear quartz (Aquamarine (Be3Al2Si6O18), Quartz (SiO2)) — Mineral

Aquamarine and clear quartz

Aquamarine (Be3Al2Si6O18), Quartz (SiO2)

Quartz (Crystal/Druzy Quartz) (Quartz (SiO₂)) — Mineral

Quartz (Crystal/Druzy Quartz)

Quartz (SiO₂)

Fluorite (Fluorite (Calcium Fluoride - CaF2)) — mineral

Fluorite

Fluorite (Calcium Fluoride - CaF2)

Fossiliferous Limestone (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Diamond (Diamond (Pure Carbon, C)) — mineral

Diamond

Diamond (Pure Carbon, C)

Nacre (Mother of Pearl) (Nacre (Biogenic Aragonite/Calcite composite, CaCO3)) — mineral

Nacre (Mother of Pearl)

Nacre (Biogenic Aragonite/Calcite composite, CaCO3)

Lazulite (Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2) — mineral

Lazulite

Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2

Chert (Arrowhead Shard) (Microcrystalline silica (SiO2)) — sedimentary

Chert (Arrowhead Shard)

Microcrystalline silica (SiO2)

Rough Diamond (Pure Carbon (C)) — mineral

Rough Diamond

Pure Carbon (C)

Diamond (Cluster Ring) (Carbon (C)) — mineral

Diamond (Cluster Ring)

Carbon (C)

Sandstone (Sandstone (lithified sand)) — sedimentary

Sandstone

Sandstone (lithified sand)

Quartz (likely Milky Quartz or Chalcedony) (Quartz (SiO2 - Silicon Dioxide)) — Mineral

Quartz (likely Milky Quartz or Chalcedony)

Quartz (SiO2 - Silicon Dioxide)

Pearl (Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)) — mineral

Pearl

Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)

Rough Diamond (Diamond (pure Carbon, C)) — mineral

Rough Diamond

Diamond (pure Carbon, C)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)