Rock Identifier

Category

Mineraloid (Man Made Glass)

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

Learn about Mineraloid (Man Made Glass) in the encyclopedia

Opalite

Goldstone

Shungite

Blue Goldstone

Sideromelane

Black Obsidian

Maskelynite

Obsidian

Tachylite

Map Jasper

Hyalite Opal

Perlite

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Granite (Granite (phaneritic intrusive igneous rock consisting of quartz, feldspar, and mica)) — igneous

Granite

Granite (phaneritic intrusive igneous rock consisting of quartz, feldspar, and mica)

Granite (Granite (a plutonic rock)) — Igneous

Granite

Granite (a plutonic rock)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Granite (Granite (Mainly Quartz SiO2, Feldspar KAlSi3O8, and Mica KAl2(AlSi3O10)(OH)2)) — Igneous

Granite

Granite (Mainly Quartz SiO2, Feldspar KAlSi3O8, and Mica KAl2(AlSi3O10)(OH)2)

Fulgarite (Fulgurite (Lechatelierite / Vitrified Sand)) — igneous

Fulgarite

Fulgurite (Lechatelierite / Vitrified Sand)

Chalk (Carbonate rock (mainly CaCO3)) — sedimentary

Chalk

Carbonate rock (mainly CaCO3)

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

Coquina

Biogenic Limestone (Calcium Carbonate, CaCO3)

Dark gray rounded stone, possibly basalt or slag (Uncertain; likely fine-grained basalt (plagioclase–pyroxene) or iron-rich industrial slag) — igneous

Dark gray rounded stone, possibly basalt or slag

Uncertain; likely fine-grained basalt (plagioclase–pyroxene) or iron-rich industrial slag

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

Flint / Chert

Microcrystalline quartz (SiO2)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Banded Jasper / Chert Beach Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Jasper / Chert Beach Pebble

Microcrystalline Quartz (SiO2)

Chert (Siltstone / Flint) (SiO2 (Cryptocrystalline Quartz)) — sedimentary

Chert (Siltstone / Flint)

SiO2 (Cryptocrystalline Quartz)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Brecciated Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Brecciated Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Pearl (Organic gemstone (Calcium carbonate - CaCO3)) — mineral

Pearl

Organic gemstone (Calcium carbonate - CaCO3)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

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

Diamond (in a jewelry setting)

Cubic Carbon (C)

Chert (Jasper/Flint var.) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Flint var.)

Silicon Dioxide (SiO2)

Granodiorite (Granodiorite (phaneritic intrusive igneous rock)) — igneous

Granodiorite

Granodiorite (phaneritic intrusive igneous rock)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Quartzite (Metamorphic quartz rock (SiO2)) — metamorphic

Quartzite

Metamorphic quartz rock (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Chert (or Flint) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (or Flint)

Microcrystalline quartz (SiO2)

Diamond (Native Carbon (C)) — gemstone

Diamond

Native Carbon (C)

Chert Arrowhead (Jasper) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert Arrowhead (Jasper)

Chert (Cryptocrystalline Quartz, SiO2)

Chert (Honey Chert / Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Honey Chert / Flint)

Silicon Dioxide (SiO2)

Diorite (Gneissic) (Diorite) — igneous

Diorite (Gneissic)

Diorite

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

Diamond (faceted)

Diamond (Pure Carbon, C)

Pearl (Aragonite (CaCO3) with Conchiolin) — mineral

Pearl

Aragonite (CaCO3) with Conchiolin

Granite (Phaneritic plutonic felsic rock) — igneous

Granite

Phaneritic plutonic felsic rock

Aura Quartz (Anomalously Coated Quartz) (Silicon Dioxide (SiO2) treated with vaporized metals) — mineral

Aura Quartz (Anomalously Coated Quartz)

Silicon Dioxide (SiO2) treated with vaporized metals

Banded agate pendant (likely carnelian or brown-and-white chalcedony agate) (Agate, a banded variety of chalcedony; microcrystalline quartz, SiO₂, with iron-oxide coloration) — gemstone

Banded agate pendant (likely carnelian or brown-and-white chalcedony agate)

Agate, a banded variety of chalcedony; microcrystalline quartz, SiO₂, with iron-oxide coloration

Orgonite Pyramid (containing Amethyst and mixed minerals) (Silicon Dioxide (SiO2) in synthetic resin) — gemstone

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin

Quartz Sandstone Pebble (Sandstone (SiO2 dominated)) — sedimentary

Quartz Sandstone Pebble

Sandstone (SiO2 dominated)

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

Mica Schist (Mica Schist (principally Biotite/Muscovite, Quartz, and Feldspar)) — metamorphic

Mica Schist

Mica Schist (principally Biotite/Muscovite, Quartz, and Feldspar)

Coquina (Bioclastic Limestone (composed primarily of CaCO3)) — sedimentary

Coquina

Bioclastic Limestone (composed primarily of CaCO3)

Coquina / Fossiliferous Limestone (Calcareous bioclastic sedimentary rock (CaCO3)) — sedimentary

Coquina / Fossiliferous Limestone

Calcareous bioclastic sedimentary rock (CaCO3)