Rock Identifier

Category

Not A Natural Rock

Browse not a natural rock specimens identified by the Rock Identifier community.

Learn about Not A Natural Rock in the encyclopedia

Asphalt Rock

Rock Gypsum

Coral Rock

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Chalk

Obsidian

Baddeleyite

Cataclasite

Anorthosite

Kimberlite

Turquoise (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Citrine (Citrine (Silicon Dioxide, SiO2)) — mineral

Citrine

Citrine (Silicon Dioxide, SiO2)

Turquoise (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Snowflake Obsidian (Volcanic Glass (SiO2 + impurities)) — igneous

Snowflake Obsidian

Volcanic Glass (SiO2 + impurities)

Diamond (or Diamond Simulant) (Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia ZrO2)) — gemstone

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia ZrO2)

Sandstone (Arenite (general term for sandstone)) — Sedimentary Rock

Sandstone

Arenite (general term for sandstone)

Sedimentary Rock

Citrine (Silicon Dioxide (SiO2) - Macrocrystalline Quartz variety) — mineral

Citrine

Silicon Dioxide (SiO2) - Macrocrystalline Quartz variety

Diamond (or Diamond Simulant) (C (Carbon) or synthetic equivalent) — gemstone

Diamond (or Diamond Simulant)

C (Carbon) or synthetic equivalent

Black Onyx (Cryptocrystalline Quartz (SiO2)) — mineral

Black Onyx

Cryptocrystalline Quartz (SiO2)

Clear Quartz Sphere (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Sphere

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Titanium Aura Quartz (Titanium-coated Silicon Dioxide (SiO2)) — mineral

Titanium Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Silicon (Industrial Grade) (Elemental Silicon (Si)) — mineral

Silicon (Industrial Grade)

Elemental Silicon (Si)

Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon Dioxide (SiO2) with impurities

Fossiliferous Limestone (Calcium Carbonate (CaCO3) with Bioclastic Inclusions) — sedimentary

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Bioclastic Inclusions

Cubic Zirconia (Faceted) (Zirconium dioxide (ZrO2)) — gemstone

Cubic Zirconia (Faceted)

Zirconium dioxide (ZrO2)

Opalite (Synthetic Opalized Glass / Man-made Glass) — gemstone

Opalite

Synthetic Opalized Glass / Man-made Glass

Heat-Treated Amethyst (Commercial Citrine) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Heat-Treated Amethyst (Commercial Citrine)

Silicon Dioxide (SiO2) with iron impurities

Quartz (likely) or a Quartzite Pebble (Silicon dioxide (SiO2) for quartz. If it's quartzite, it's a metamorphic rock primarily composed of quartz.) — Mineral, specifically a detrital grain

Quartz (likely) or a Quartzite Pebble

Silicon dioxide (SiO2) for quartz. If it's quartzite, it's a metamorphic rock primarily composed of quartz.

Mineral, specifically a detrital grain

Amber (Succinate (Organic Fossilized Resin)) — mineraloid

Amber

Succinate (Organic Fossilized Resin)

Turquoise (Turquoise (Hydrated phosphate of copper and aluminium) - CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Turquoise (Hydrated phosphate of copper and aluminium) - CuAl6(PO4)4(OH)8·4H2O

Amber (Cherry or Red variety) (Succinite (with various trace amounts of organic compounds)) — Organic Gemstone (not a rock)

Amber (Cherry or Red variety)

Succinite (with various trace amounts of organic compounds)

Organic Gemstone (not a rock)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Dyed Tumbled Quartz (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Tumbled Quartz

Silicon Dioxide (SiO2) with artificial pigment

Likely vesicular basalt (scoria) (Basaltic scoria; chiefly plagioclase, pyroxene, and olivine with vesicles) — igneous

Likely vesicular basalt (scoria)

Basaltic scoria; chiefly plagioclase, pyroxene, and olivine with vesicles

Porphyry (Porphyritic Andesite/Basalt) — igneous

Porphyry

Porphyritic Andesite/Basalt

Blue Goldstone (Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)) — Synthetic (Man-made Glass)

Blue Goldstone

Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)

Synthetic (Man-made Glass)

Tumbled carnelian agate with dark mineral inclusions (Carnelian, an orange variety of microcrystalline quartz (chalcedony), SiO₂; dark inclusions are likely iron oxides/hydroxides, possibly hematite, goethite, or a basaltic/matrix fragment) — gemstone

Tumbled carnelian agate with dark mineral inclusions

Carnelian, an orange variety of microcrystalline quartz (chalcedony), SiO₂; dark inclusions are likely iron oxides/hydroxides, possibly hematite, goethite, or a basaltic/matrix fragment

Blue Aura Quartz (Silicon Dioxide (SiO2) with metallic vapor coating) — mineral

Blue Aura Quartz

Silicon Dioxide (SiO2) with metallic vapor coating

Costume Jewelry with Synthetic Gemstones (Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)) — mineral

Costume Jewelry with Synthetic Gemstones

Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)

Fossilized Chiton (Polyplacophora) (Polyplacophora (fossilized valves)) — mineralized fossil

Fossilized Chiton (Polyplacophora)

Polyplacophora (fossilized valves)

mineralized fossil

Snakeskin Agate (Agate (Cryptocrystalline Quartz, SiO2)) — mineral

Snakeskin Agate

Agate (Cryptocrystalline Quartz, SiO2)

Cubic Zirconia (as used in jewelry setting) (Zirconium dioxide (ZrO2)) — mineral

Cubic Zirconia (as used in jewelry setting)

Zirconium dioxide (ZrO2)

Selenite (gypsum) (Gypsum, CaSO₄·2H₂O; variety commonly called satin spar or selenite) — mineral

Selenite (gypsum)

Gypsum, CaSO₄·2H₂O; variety commonly called satin spar or selenite

Pink Quartz / Agate pebble (Silicon Dioxide (SiO2)) — mineral

Pink Quartz / Agate pebble

Silicon Dioxide (SiO2)

Citrine (likely Heat-Treated Amethyst) (Silicon Dioxide (SiO2)) — mineral

Citrine (likely Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Turquoise (CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)

Agate (Moss or Banded Agate variety) (Agate (Silicon Dioxide - SiO2)) — mineral

Agate (Moss or Banded Agate variety)

Agate (Silicon Dioxide - SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Diamond (C) — gemstone

Diamond

C

Diamond (or Diamond Simulant) (Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia ZrO2)) — gemstone

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia ZrO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)