Rock Identifier

Category

Man Made Object (Simulant)

Browse man made object (simulant) specimens identified by the Rock Identifier community.

Learn about Man Made Object (Simulant) in the encyclopedia

Opalite

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Goldstone

Map Jasper

Blue Goldstone

Mandarin Garnet

Mandarin Garnet

Andalusite

Zincite

Transvaal Jade

Marl

Dunite

Coquina

Polished ocean jasper / orbicular jasper (Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and other mineral inclusions) — mineral

Polished ocean jasper / orbicular jasper

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and other mineral inclusions

Tumbled carnelian (reddish chalcedony) (Carnelian, a cryptocrystalline variety of quartz (SiO₂)) — gemstone

Tumbled carnelian (reddish chalcedony)

Carnelian, a cryptocrystalline variety of quartz (SiO₂)

Polished jasper (likely brecciated or scenic jasper) (Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions) — gemstone

Polished jasper (likely brecciated or scenic jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions

Orbicular jasper (ocean jasper) (Microcrystalline quartz (SiO₂), chiefly chalcedony with feldspar, zeolites, and iron-oxide inclusions) — mineral

Orbicular jasper (ocean jasper)

Microcrystalline quartz (SiO₂), chiefly chalcedony with feldspar, zeolites, and iron-oxide inclusions

Polished green aventurine (Quartzite dominated by quartz (SiO₂), with green fuchsite mica or chlorite inclusions) — mineral

Polished green aventurine

Quartzite dominated by quartz (SiO₂), with green fuchsite mica or chlorite inclusions

Snowflake obsidian cabochon (Obsidian (volcanic glass), SiO₂-rich; white areas are cristobalite/spherulitic devitrification) — igneous

Snowflake obsidian cabochon

Obsidian (volcanic glass), SiO₂-rich; white areas are cristobalite/spherulitic devitrification

Banded agate (likely green jasper/agate pebble) (Microcrystalline quartz, SiO₂, with iron- and chlorite-rich inclusions) — mineral

Banded agate (likely green jasper/agate pebble)

Microcrystalline quartz, SiO₂, with iron- and chlorite-rich inclusions

Agate (Silicon dioxide (Chalcedony), SiO2) — gemstone

Agate

Silicon dioxide (Chalcedony), SiO2

Green Quartz (Silicon Dioxide (SiO2)) — mineral

Green Quartz

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Agate (Silicon Dioxide (SiO2), microcrystalline variety of quartz) — sedimentary

Agate

Silicon Dioxide (SiO2), microcrystalline variety of quartz

Satin Spar Selenite (Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)) — mineral

Satin Spar Selenite

Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)

Tumbled Agate (Dyed Blue) (Silicon Dioxide (Chalcedony variety)) — gemstone

Tumbled Agate (Dyed Blue)

Silicon Dioxide (Chalcedony variety)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Agate (Silicon dioxide (chalcedony), SiO2) — sedimentary

Agate

Silicon dioxide (chalcedony), SiO2

Jasper (Microcrystalline Quartz (SiO2) with iron oxide impurities) — sedimentary

Jasper

Microcrystalline Quartz (SiO2) with iron oxide impurities

Fossil Coral (Rugose Coral or Tabulate Coral (Phylum Cnidaria)) — fossil

Fossil Coral

Rugose Coral or Tabulate Coral (Phylum Cnidaria)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Jadeite (Jadeite (NaAlSi2O6)) — mineral

Jadeite

Jadeite (NaAlSi2O6)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Microcrystalline Quartz (SiO2) with iron oxide impurities) — sedimentary

Jasper

Microcrystalline Quartz (SiO2) with iron oxide impurities

Septarian Nodule (Septarian Concretion (Calcite, Aragonite, Limestone)) — sedimentary

Septarian Nodule

Septarian Concretion (Calcite, Aragonite, Limestone)

Amethyst (Quartz (Silicon Dioxide, SiO2)) — mineral

Amethyst

Quartz (Silicon Dioxide, SiO2)

Polychrome Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Polychrome Jasper

Microcrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood / Xylopal (SiO2)) — fossil

Petrified Wood

Silicified Wood / Xylopal (SiO2)

Unakite (Altered Granite (Epidote, Orthoclase Feldspar, Quartz)) — metamorphic

Unakite

Altered Granite (Epidote, Orthoclase Feldspar, Quartz)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Agate (Silicon dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon dioxide (Chalcedony), SiO2

Celestite Geode (Strontium Sulfate (SrSO4)) — mineral

Celestite Geode

Strontium Sulfate (SrSO4)

Lapis Lazuli (Complex silicate rock (principally Lazurite, Calcite, and Pyrite)) — mineral

Lapis Lazuli

Complex silicate rock (principally Lazurite, Calcite, and Pyrite)

Agate (Chalcedony (SiO2)) — sedimentary

Agate

Chalcedony (SiO2)

Unakite (Altered Granite (Epidotized Granite)) — metamorphic

Unakite

Altered Granite (Epidotized Granite)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Unakite (Altered Granite (Unakite)) — metamorphic

Unakite

Altered Granite (Unakite)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

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

Red Jasper (Tumbled)

Silicon Dioxide (SiO2) with iron oxide inclusions

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite mica) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Agate (SiO2 (Silicon dioxide, chalcedony variety)) — Mineral

Agate

SiO2 (Silicon dioxide, chalcedony variety)

Red Jasper (Jasper (Silica-rich Microcrystalline Quartz, SiO2 with Iron Oxide)) — sedimentary

Red Jasper

Jasper (Silica-rich Microcrystalline Quartz, SiO2 with Iron Oxide)

Banded Calcite (often commercially called Onyx) (Calcite (Calcium Carbonate, CaCO3)) — mineral

Banded Calcite (often commercially called Onyx)

Calcite (Calcium Carbonate, CaCO3)

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

Yellow Jasper

Chalcedony (Silicon Dioxide with iron inclusions), SiO2

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)