Rock Identifier

Category

Synthetic (Man Made Glass)

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

Learn about Synthetic (Man Made Glass) in the encyclopedia

Opalite

Goldstone

Zincite

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Blue Goldstone

Sideromelane

Lead Feldspar

Black Obsidian

Maskelynite

Obsidian

Tachylite

Map Jasper

Mother of Pearl (Nacre) (Calcium Carbonate (Aragonite) with organic conchiolin) — gemstone

Mother of Pearl (Nacre)

Calcium Carbonate (Aragonite) with organic conchiolin

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Raw Diamond (Carbon (C)) — gemstone

Raw Diamond

Carbon (C)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Blue Chalcedony (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Blue Chalcedony

Chalcedony (Silicon Dioxide, SiO2)

Amethyst (Silicon Dioxide (SiO2)) — mineral

Amethyst

Silicon Dioxide (SiO2)

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

Pearl

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

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

Nacre (Mother of Pearl)

Nacre (Biogenic Aragonite/Calcite composite, CaCO3)

Petoskey Stone (Hexagonaria percarinata (Fossilized Coral)) — sedimentary

Petoskey Stone

Hexagonaria percarinata (Fossilized Coral)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Diamond (in jewelry setting)

Carbon (C)

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

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

Diamond (in jewelry setting)

Adamantine Carbon (C)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Sea Shell (Fighting Conch Fragment) (Calcium Carbonate (CaCO3) - Strombus alatus fragment) — sedimentary (biogenic)

Sea Shell (Fighting Conch Fragment)

Calcium Carbonate (CaCO3) - Strombus alatus fragment

sedimentary (biogenic)

Diorite (Intermediate plutonic igneous rock) — igneous

Diorite

Intermediate plutonic igneous rock

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Petoskey Stone (Hexagonaria percarinata (Fossilized Rugose Coral)) — sedimentary (fossilized)

Petoskey Stone

Hexagonaria percarinata (Fossilized Rugose Coral)

sedimentary (fossilized)

White Marble (Recrystallized Calcite (CaCO3)) — metamorphic

White Marble

Recrystallized Calcite (CaCO3)

Opal (Hydrous silicon dioxide (SiO2·nH2O)) — mineral

Opal

Hydrous silicon dioxide (SiO2·nH2O)

Lapis Lazuli (Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)) — Mineral

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)

Red Sandstone (Arenite (with Iron Oxide / Hematite staining)) — sedimentary

Red Sandstone

Arenite (with Iron Oxide / Hematite staining)

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Basalt (Basalt (comprising Plagioclase feldspar, Pyroxene, and Olivine)) — igneous

Basalt

Basalt (comprising Plagioclase feldspar, Pyroxene, and Olivine)

Dark rounded pebble, likely basalt or slag (Probable fine-grained mafic rock; possibly basalt (plagioclase–pyroxene) or industrial iron/steel slag) — igneous

Dark rounded pebble, likely basalt or slag

Probable fine-grained mafic rock; possibly basalt (plagioclase–pyroxene) or industrial iron/steel slag

Sandstone (Arenite (siliciclastic sedimentary rock composed mostly of quartz)) — sedimentary

Sandstone

Arenite (siliciclastic sedimentary rock composed mostly of quartz)

Pink Granite (Phaneritic Felsic Intrusive Igneous Rock) — igneous

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

Granite Pebble (Felsic intrusive igneous rock) — igneous

Granite Pebble

Felsic intrusive igneous rock

Smoky Quartz (Faceted) (Silicon Dioxide (SiO2)) — gemstone

Smoky Quartz (Faceted)

Silicon Dioxide (SiO2)

Lapis Lazuli (Lapis Lazuli (Complex rock consisting primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Complex rock consisting primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2)

Aragonite (specifically Mexican Marbled Onyx) (Aragonite (Calcium Carbonate, CaCO3)) — mineral

Aragonite (specifically Mexican Marbled Onyx)

Aragonite (Calcium Carbonate, CaCO3)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Beaded Jewelry (Assorted Gemstones) (Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ) — Mineral, Jewelry

Beaded Jewelry (Assorted Gemstones)

Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ

Mineral, Jewelry

Sandstone (with iron staining) (Quartz Arenite / Ferruginous Sandstone) — sedimentary

Sandstone (with iron staining)

Quartz Arenite / Ferruginous Sandstone

Diamond (C (Native Carbon)) — gemstone

Diamond

C (Native Carbon)

Coquina Limestone (Coquina (Biogenic Limestone)) — sedimentary

Coquina Limestone

Coquina (Biogenic Limestone)

Slate (Foliated Metamorphic Slate) — metamorphic

Slate

Foliated Metamorphic Slate

Fossilized Shark Tooth (Fragment) (Elasmobranchii gen. et sp. indet. (Calcium Phosphate / Apatite fossil)) — fossil

Fossilized Shark Tooth (Fragment)

Elasmobranchii gen. et sp. indet. (Calcium Phosphate / Apatite fossil)

Chert (Yellow Jasper/Flint) (Chert (Microcrystalline Silicon Dioxide, SiO2)) — sedimentary

Chert (Yellow Jasper/Flint)

Chert (Microcrystalline Silicon Dioxide, SiO2)

Coquina (Coquina (Biogenic Limestone / CaCO3)) — sedimentary

Coquina

Coquina (Biogenic Limestone / CaCO3)

Rutilated Quartz (Quartz with Rutile inclusions (SiO2 with TiO2)) — mineral

Rutilated Quartz

Quartz with Rutile inclusions (SiO2 with TiO2)

Chert (with Desert Varnish/Iron Stain) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (with Desert Varnish/Iron Stain)

Microcrystalline or Cryptocrystalline Quartz (SiO2)