Rock Identifier

Category

Not A Rock (Synthetic Material)

Browse not a rock (synthetic material) specimens identified by the Rock Identifier community.

Granite (Phaneritic Plutonic Felsic Rock) — igneous

Granite

Phaneritic Plutonic Felsic Rock

igneous
Basalt (Extrusive Mafic Igneous Rock) — igneous

Basalt

Extrusive Mafic Igneous Rock

igneous
Carnelian (Carnelian (a variety of Chalcedony); SiO2 (Silicon Dioxide)) — mineral

Carnelian

Carnelian (a variety of Chalcedony); SiO2 (Silicon Dioxide)

mineral
Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

mineral
Moonstone (Orthoclase (Potassium aluminum silicate - KAlSi3O8)) — mineral

Moonstone

Orthoclase (Potassium aluminum silicate - KAlSi3O8)

mineral
Yellow Quartz or Citrine (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz or Citrine

Silicon Dioxide (SiO2)

mineral
Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

igneous
Carnelian (Carnelian (variety of Chalcedony, SiO2)) — mineral

Carnelian

Carnelian (variety of Chalcedony, SiO2)

mineral
Carnelian (Carnelian (SiO2 - Silicon Dioxide with Hematite impurities)) — mineral

Carnelian

Carnelian (SiO2 - Silicon Dioxide with Hematite impurities)

mineral
Amethyst (as seen in jewelry) (Amethyst (Silicon Dioxide SiO2 + Fe4+)) — mineral

Amethyst (as seen in jewelry)

Amethyst (Silicon Dioxide SiO2 + Fe4+)

mineral
Sunstone (Plagioclase Feldspar (Na,Ca)(Al,Si)4O8) — mineral

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

mineral
Amber Agate / Carnelian (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Amber Agate / Carnelian

Chalcedony (Silicon Dioxide, SiO2)

mineral
Tree Agate (Silicon Dioxide (SiO2) with Chlorite inclusions) — Mineral variant

Tree Agate

Silicon Dioxide (SiO2) with Chlorite inclusions

Mineral variant
Chalcedony (Botryoidal/Agate nodule) (Microcrystalline Quartz (SiO2)) — mineral

Chalcedony (Botryoidal/Agate nodule)

Microcrystalline Quartz (SiO2)

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

Granite

Phaneritic Felsic Igneous Rock (Granite)

igneous
Moss Agate (Silicon Dioxide (SiO2) with inclusions of hornblende or chlorite) — mineral

Moss Agate

Silicon Dioxide (SiO2) with inclusions of hornblende or chlorite

mineral
Rhodonite (in matrix) (Rhodonite (Mn,Fe,Mg,Ca)SiO3) — Mineral

Rhodonite (in matrix)

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Mineral
Blue Apatite (Apatite (Group), Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Apatite (Group), Ca5(PO4)3(F,Cl,OH)

mineral
Basalt (Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)) — igneous

Basalt

Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)

igneous
Labradorite (Gray Tumbled) (Labradorite (Ca,Na)(Al,Si)4O8) — mineral

Labradorite (Gray Tumbled)

Labradorite (Ca,Na)(Al,Si)4O8

mineral
Green Aventurine (Silicon Dioxide (SiO2) with inclusions) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with inclusions

metamorphic
Shale (Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)) — sedimentary

Shale

Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)

sedimentary
Basalt with Calcite Veins (Basalt (containing CaCO3 inclusions)) — igneous

Basalt with Calcite Veins

Basalt (containing CaCO3 inclusions)

igneous
Ocherous Sandstone (Ferruginous Sandstone) (Ferruginous Arenite (SiO2 with Fe2O3)) — sedimentary

Ocherous Sandstone (Ferruginous Sandstone)

Ferruginous Arenite (SiO2 with Fe2O3)

sedimentary
Jasper (Silicon dioxide (SiO2)) — Mineral

Jasper

Silicon dioxide (SiO2)

Mineral
Quartzite Breccia (Brecciated Quartzite (SiO2)) — metamorphic

Quartzite Breccia

Brecciated Quartzite (SiO2)

metamorphic
Moss Agate (Chalcedony (Silicon Dioxide) with dendritic inclusions (SiO2)) — mineral

Moss Agate

Chalcedony (Silicon Dioxide) with dendritic inclusions (SiO2)

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

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

igneous
Conglomerate (Conglomerate (Detrital Sedimentary Rock)) — sedimentary

Conglomerate

Conglomerate (Detrital Sedimentary Rock)

sedimentary
Carnelian (Carnelian (Microcrystalline Quartz, SiO2 with Fe2O3 impurities)) — mineral

Carnelian

Carnelian (Microcrystalline Quartz, SiO2 with Fe2O3 impurities)

mineral
Tiger's Eye (Pseudomorph of quartz after crocidolite (SiO2 with iron oxide inclusions)) — metamorphic

Tiger's Eye

Pseudomorph of quartz after crocidolite (SiO2 with iron oxide inclusions)

metamorphic
Quartzite Cobble (Meta-quartzite (SiO2)) — metamorphic

Quartzite Cobble

Meta-quartzite (SiO2)

metamorphic
Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

mineral
Amethyst Quartz (Tumbled) (Amethyst (Silicon Dioxide with iron impurities, SiO2)) — mineral

Amethyst Quartz (Tumbled)

Amethyst (Silicon Dioxide with iron impurities, SiO2)

mineral
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Amethyst (Crystalline Quartz (SiO2) with iron impurities) — mineral

Amethyst

Crystalline Quartz (SiO2) with iron impurities

mineral
Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

sedimentary
Green Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

mineral
Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

metamorphic
Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Fluorite (Rainbow Fluorite)

Calcium Fluoride (CaF2)

mineral
Carnelian Agate (Silicon Dioxide (SiO2)) — mineral

Carnelian Agate

Silicon Dioxide (SiO2)

mineral