Rock Identifier

Category

Not A Rock (Synthetic Material)

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

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Basalt (River Pebble) (Extrusive mafic igneous rock) — igneous

Basalt (River Pebble)

Extrusive mafic igneous rock

igneous
Unable to identify - Image contains non-geological items — N/A

Unable to identify - Image contains non-geological items

N/A
Black River Stone (likely Basalt or Chert) (Basalt (primarily Plagioclase Feldspar and Pyroxene)) — igneous

Black River Stone (likely Basalt or Chert)

Basalt (primarily Plagioclase Feldspar and Pyroxene)

igneous
Quartzite with Quartz Veining (Quartzite (primarily SiO2)) — metamorphic

Quartzite with Quartz Veining

Quartzite (primarily SiO2)

metamorphic
Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

mineral
Spessartine Garnet (Manganese aluminum silicate (Mn2+3Al2(SiO4)3)) — mineral

Spessartine Garnet

Manganese aluminum silicate (Mn2+3Al2(SiO4)3)

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

Granite River Rock

Phaneritic Felsic Igneous Rock (Granite)

igneous
Carnelian (Carnelian (a variety of Chalcedony, SiO2)) — Mineral

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Mineral
Carnelian (Carnelian Agate (SiO2)) — mineral

Carnelian

Carnelian Agate (SiO2)

mineral
Blue Chalcedony (likely dyed Agate) (Silicon Dioxide (SiO₂)) — mineral

Blue Chalcedony (likely dyed Agate)

Silicon Dioxide (SiO₂)

mineral
Rose Quartz (Quartz (SiO₂), specifically a variety of Quartz) — Mineral

Rose Quartz

Quartz (SiO₂), specifically a variety of Quartz

Mineral
Dalmatian Jasper (Peralkaline rhyolite with Arfvedsonite inclusions) — igneous

Dalmatian Jasper

Peralkaline rhyolite with Arfvedsonite inclusions

igneous
Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

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

Dyed Agate

Silicon Dioxide (SiO2)

mineral
Green Fluorite (likely synthetic or heat-treated for jewelry) (Calcium Fluoride (CaF2)) — mineral

Green Fluorite (likely synthetic or heat-treated for jewelry)

Calcium Fluoride (CaF2)

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

Carnelian Agate

Chalcedony (Silicon Dioxide, SiO2)

mineral
Jasper (Yellow Jasper) (Silicon Dioxide (SiO2) with iron inclusions) — sedimentary

Jasper (Yellow Jasper)

Silicon Dioxide (SiO2) with iron inclusions

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

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary
Red Sandstone (Arenite (primarily Quartz, SiO2, with Iron Oxide/Hematite)) — sedimentary

Red Sandstone

Arenite (primarily Quartz, SiO2, with Iron Oxide/Hematite)

sedimentary
Synthetic Convention Badge (Plastic/PVC) (Polyvinyl Chloride (PVC) / Polycarbonate) — mineraloid (synthetic)

Synthetic Convention Badge (Plastic/PVC)

Polyvinyl Chloride (PVC) / Polycarbonate

mineraloid (synthetic)
Amethyst (SiO2 (Silicon Dioxide with Iron impurities)) — mineral

Amethyst

SiO2 (Silicon Dioxide with Iron impurities)

mineral
Amazonite (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

mineral
Amazonite (Amazonite (KAlSi3O8)) — mineral

Amazonite

Amazonite (KAlSi3O8)

mineral
Basalt River Cobble (Basalt (Mafic Igneous Rock)) — igneous

Basalt River Cobble

Basalt (Mafic Igneous Rock)

igneous
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Quartz (Silicon Dioxide (SiO₂)) — Mineral

Quartz

Silicon Dioxide (SiO₂)

Mineral
Amazonite (Microcline (KAlSi3O8) with Pb impurities) — mineral

Amazonite

Microcline (KAlSi3O8) with Pb impurities

mineral
Obsidian (Volcanic Glass (SiO2)) — igneous

Obsidian

Volcanic Glass (SiO2)

igneous
Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

sedimentary
Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

mineral
Calcite (Calcite (CaCO3)) — Mineral

Calcite

Calcite (CaCO3)

Mineral
Shale (Shale (Sedimentary rock composed of mud/clay minerals)) — sedimentary

Shale

Shale (Sedimentary rock composed of mud/clay minerals)

sedimentary
Carnelian (Carnelian (Chalcedony / SiO2)) — mineral

Carnelian

Carnelian (Chalcedony / SiO2)

mineral
Bauxite (Concretionary) (Bauxite (Al(OH)3, AlO(OH))) — sedimentary

Bauxite (Concretionary)

Bauxite (Al(OH)3, AlO(OH))

sedimentary
Moss Agate Geode Sphere (Silicon Dioxide (SiO2) - Chalcedony with Chlorite or Manganese inclusions) — mineral

Moss Agate Geode Sphere

Silicon Dioxide (SiO2) - Chalcedony with Chlorite or Manganese inclusions

mineral
Zoisite with Ruby / Anyolite (Anyolite (Ca2Al3(SiO4)3(OH) with Chromian Zoisite and Tschermakite inclusions)) — metamorphic

Zoisite with Ruby / Anyolite

Anyolite (Ca2Al3(SiO4)3(OH) with Chromian Zoisite and Tschermakite inclusions)

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

Amethyst (Quartz)

Silicon Dioxide (SiO2) with iron impurities

mineral
Basalt (Basalt (Mafic Extrusive)) — igneous

Basalt

Basalt (Mafic Extrusive)

igneous
Basalt (River Stone) (Basalt) — igneous

Basalt (River Stone)

Basalt

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

Gold Nugget

Native Gold (Au)

mineral
Basalt (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

igneous