Rock Identifier

Category

Mineral (Man Made Glass, Not Natural)

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

Learn about Mineral (Man Made Glass, Not Natural) in the encyclopedia

Opalite

Goldstone

Obsidian

Black Obsidian

Macusanite

Baddeleyite

Blue Goldstone

Green Obsidian

Blue Obsidian

Midnight Obsidian

Maskelynite

Pink Obsidian

Dark, weathered stone—possibly basalt or slag (Indeterminate; likely fine-grained basalt (plagioclase–pyroxene)) — igneous

Dark, weathered stone—possibly basalt or slag

Indeterminate; likely fine-grained basalt (plagioclase–pyroxene)

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

Pearl

Calcium Carbonate (CaCO3) with Conchiolin

Terracotta (Man-made ceramic brick fragment) (Baked clay / High-iron ceramic (Silicate-based ceramic)) — Anthropogenic material (Man-made sedimentary mimic)

Terracotta (Man-made ceramic brick fragment)

Baked clay / High-iron ceramic (Silicate-based ceramic)

Anthropogenic material (Man-made sedimentary mimic)

Asphalt aggregate (Human-made bituminous asphalt containing crushed silicate rock aggregate) — sedimentary

Asphalt aggregate

Human-made bituminous asphalt containing crushed silicate rock aggregate

Angel Aura Quartz (Treated Clear Quartz) (Silicon Dioxide (SiO2) coated with Vaporized Silver and Platinum) — mineral

Angel Aura Quartz (Treated Clear Quartz)

Silicon Dioxide (SiO2) coated with Vaporized Silver and Platinum

Pearl (Aragonite (CaCO3) with Conchiolin) — mineral

Pearl

Aragonite (CaCO3) with Conchiolin

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

Diamond

Diamond (pure Carbon, C)

Banded Sandstone (Arenite with Liesegang banding) — sedimentary

Banded Sandstone

Arenite with Liesegang banding

Diamond (as set in a metal alloy ring) (Diamond (Pure Carbon, C)) — mineral

Diamond (as set in a metal alloy ring)

Diamond (Pure Carbon, C)

Carved red jasper bead (likely ceramic imitation) (Jasper, microcrystalline quartz (SiO₂); exact material uncertain from the image) — mineral

Carved red jasper bead (likely ceramic imitation)

Jasper, microcrystalline quartz (SiO₂); exact material uncertain from the image

Sandstone (Clastic sedimentary rock (Quartz arenite/Arkose)) — sedimentary

Sandstone

Clastic sedimentary rock (Quartz arenite/Arkose)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

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

Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Coquina (Coquina (Bioclastic Limestone)) — sedimentary

Coquina

Coquina (Bioclastic Limestone)

Polished agate bead bracelet (Agate, a banded microcrystalline variety of quartz (SiO₂), likely mixed-color dyed or naturally colored chalcedony) — gemstone

Polished agate bead bracelet

Agate, a banded microcrystalline variety of quartz (SiO₂), likely mixed-color dyed or naturally colored chalcedony

Synthetic Faux Fur Fursuit (Polyacrylonitrile / Polyester (Synthetic Textile)) — not a rock (synthetic material/costume)

Synthetic Faux Fur Fursuit

Polyacrylonitrile / Polyester (Synthetic Textile)

not a rock (synthetic material/costume)

Yooperlite (Syenite clast containing fluorescent Sodalite) (Sodalite-bearing Syenite) — igneous

Yooperlite (Syenite clast containing fluorescent Sodalite)

Sodalite-bearing Syenite

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

Flint / Chert

Microcrystalline Quartz (SiO2)

Tumbled orange chalcedony / jasper (Microcrystalline quartz, SiO₂, likely iron-stained chalcedony or quartz-rich jasper) — mineral

Tumbled orange chalcedony / jasper

Microcrystalline quartz, SiO₂, likely iron-stained chalcedony or quartz-rich jasper

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Polished blue stone, likely sodalite or dyed agate (Sodalite: Na₈(Al₆Si₆O₂₄)Cl₂; exact identification requires testing) — mineral

Polished blue stone, likely sodalite or dyed agate

Sodalite: Na₈(Al₆Si₆O₂₄)Cl₂; exact identification requires testing

Pearl (Aragonite (CaCO3 with conchiolin)) — mineral

Pearl

Aragonite (CaCO3 with conchiolin)

Sandstone (Arenite (composed primarily of Quartz: SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of Quartz: SiO2)

Chalk (Calcite (CaCO3)) — sedimentary

Chalk

Calcite (CaCO3)

Slag (Anthropogenic Vitrification Product / Silicate Slag) — Anthropogenic (Man-made industrial byproduct)

Slag

Anthropogenic Vitrification Product / Silicate Slag

Anthropogenic (Man-made industrial byproduct)

Granite (Phaneritic Igneous Rock (composed mostly of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Phaneritic Igneous Rock (composed mostly of Quartz, Alkali Feldspar, and Plagioclase)

Carved quartz skull, likely smoky quartz or gray chalcedony (Silicon dioxide (SiO₂), quartz or microcrystalline quartz) — gemstone

Carved quartz skull, likely smoky quartz or gray chalcedony

Silicon dioxide (SiO₂), quartz or microcrystalline quartz

Green glassy stone, possibly aventurine or green jade (Unidentifiable from the image; possible quartz-rich aventurine (SiO₂) or jadeite/nephrite) — mineral

Green glassy stone, possibly aventurine or green jade

Unidentifiable from the image; possible quartz-rich aventurine (SiO₂) or jadeite/nephrite

Green Aventurine (Silicon Dioxide (SiO2+KAl2(AlSi3O10)(OH)2)) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2+KAl2(AlSi3O10)(OH)2)

Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

Nickel coin (U.S. currency) (Cupronickel (75% Copper, 25% Nickel alloy)) — man-made alloy (metallic)

Nickel coin (U.S. currency)

Cupronickel (75% Copper, 25% Nickel alloy)

man-made alloy (metallic)

Decorated turquoise-like bead or mineral pendant (Likely turquoise [CuAl₆(PO₄)₄(OH)₈·4H₂O], possibly dyed composite or blue-green jasper) — mineral

Decorated turquoise-like bead or mineral pendant

Likely turquoise [CuAl₆(PO₄)₄(OH)₈·4H₂O], possibly dyed composite or blue-green jasper

Polished white chalcedony or milky quartz pebble (Chalcedony, microcrystalline quartz (SiO₂), possibly with iron-oxide staining or a minor mineral inclusion) — mineral

Polished white chalcedony or milky quartz pebble

Chalcedony, microcrystalline quartz (SiO₂), possibly with iron-oxide staining or a minor mineral inclusion

Pink Granite (Phaneritic Felsic Igneous Rock (Granite)) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Vesicular basalt (possibly slag-contaminated) (Basalt; chiefly plagioclase and pyroxene, with possible olivine and secondary minerals) — igneous

Vesicular basalt (possibly slag-contaminated)

Basalt; chiefly plagioclase and pyroxene, with possible olivine and secondary minerals

Polished amethyst bead fragments (Amethyst, purple quartz (SiO₂)) — gemstone

Polished amethyst bead fragments

Amethyst, purple quartz (SiO₂)

Diamond ring (Diamond, crystalline carbon (C)) — gemstone

Diamond ring

Diamond, crystalline carbon (C)

Tumbled cream-colored pebble (Likely quartz-rich sandstone or limestone; exact identification requires testing) — sedimentary

Tumbled cream-colored pebble

Likely quartz-rich sandstone or limestone; exact identification requires testing

Rough Diamond (Diamond (Pure Carbon: C)) — mineral

Rough Diamond

Diamond (Pure Carbon: C)

Unidentified polished dark gemstone cabochon (Possibly hematite, obsidian, jet, or dark agate; image insufficient for a definitive identification) — gemstone

Unidentified polished dark gemstone cabochon

Possibly hematite, obsidian, jet, or dark agate; image insufficient for a definitive identification

Asphalt (Bituminous Concrete) (Bituminous mix / Anthropogenic conglomerate) — man-made composite (lithified equivalent of sedimentary)

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

man-made composite (lithified equivalent of sedimentary)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock