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

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Granite (Granite (composed primarily of Quartz, Feldspar, and Mica)) — igneous

Granite

Granite (composed primarily of Quartz, Feldspar, and Mica)

Libyan Desert Glass (Impactite (High-silica tektite)) — mineral

Libyan Desert Glass

Impactite (High-silica tektite)

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

Diamond (in jewelry setting)

Cubic Carbon (C)

Diamond (in Jewelry) (Carbon (C)) — mineral

Diamond (in Jewelry)

Carbon (C)

Rough Diamond (Diamond (pure carbon, C)) — mineral

Rough Diamond

Diamond (pure carbon, C)

Ruby (Raw Corundum) (Corundum (Al2O3) with Chromium traces) — mineral

Ruby (Raw Corundum)

Corundum (Al2O3) with Chromium traces

Amber (Succinite (specifically for Baltic amber); approximate formula C10H16O) — organic mineraloid

Amber

Succinite (specifically for Baltic amber); approximate formula C10H16O

organic mineraloid

Tumbled Moss Agate (Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide) — mineral

Tumbled Moss Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide

Bumble Bee Jasper (Calcite and Volcanic Ash Mixture) — sedimentary

Bumble Bee Jasper

Calcite and Volcanic Ash Mixture

Green Quartz (Prasiolite/Adventurine) (Silicon Dioxide (SiO2) with inclusions) — mineral

Green Quartz (Prasiolite/Adventurine)

Silicon Dioxide (SiO2) with inclusions

Fired Clay Brick (Anthropic Rock substitute) (Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)) — metamorphic (man-made / anthropic)

Fired Clay Brick (Anthropic Rock substitute)

Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)

metamorphic (man-made / anthropic)

Smoky Quartz (Tumbled/Water-worn Quartz) (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz (Tumbled/Water-worn Quartz)

Silicon Dioxide (SiO2)

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

Amethyst

Quartz (Silicon Dioxide, SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Amethyst

Quartz (SiO2) with iron impurities

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

Smoky Quartz Pebble

Silicon Dioxide (SiO2)

Amethyst (Silicon dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon dioxide (SiO2) with iron impurities

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

Yellow Quartz (Citrine or Yellow Jasper)

Silicon Dioxide (SiO2) with iron impurities

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Blue Sapphire (likely lab-grown or treated) (Corundum (Aluminum Oxide, Al2O3)) — gemstone

Blue Sapphire (likely lab-grown or treated)

Corundum (Aluminum Oxide, Al2O3)

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

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Citrine Quartz (Crystalline Quartz (SiO2 with iron impurities)) — mineral

Citrine Quartz

Crystalline Quartz (SiO2 with iron impurities)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Quartz (Citrine or Iron-Stained variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Citrine or Iron-Stained variety)

Silicon Dioxide (SiO2)

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Amethyst (Tumbled)

Silicon Dioxide (SiO2) with iron impurities

Yellow Quartz (Citrine or Quartz Crystal with Iron Inclusions) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Quartz Crystal with Iron Inclusions)

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Limonite (Iron Ore) (FeO(OH)·nH2O) — mineral

Limonite (Iron Ore)

FeO(OH)·nH2O

Cullet Glass / Slag Glass (Amorphous silica glass) — man-made glass / industrial byproduct

Cullet Glass / Slag Glass

Amorphous silica glass

man-made glass / industrial byproduct

Herkimer Diamond (Quartz (Silicon Dioxide, SiO2)) — mineral

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

Red Cubic Zirconia (Simulated Garnet) (Zirconium Dioxide (ZrO2)) — mineral

Red Cubic Zirconia (Simulated Garnet)

Zirconium Dioxide (ZrO2)

Nephrite Jade (Nephrite) — Mineral/Rock

Nephrite Jade

Nephrite

White quartz pebble (Quartz (SiO₂), likely milky quartz) — mineral

White quartz pebble

Quartz (SiO₂), likely milky quartz

Likely tumbled quartz/chalcedony (Quartz (SiO₂), possibly milky quartz or pale chalcedony) — mineral

Likely tumbled quartz/chalcedony

Quartz (SiO₂), possibly milky quartz or pale chalcedony

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

Smoky Quartz

Crystalline Silicon Dioxide (SiO2)

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

Quartz (Smoky Quartz)

Silicon Dioxide (SiO2)

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

Citrine Quartz

Citrine (Silicon Dioxide, SiO2)

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

Citrine

Silicon Dioxide (SiO2) with iron impurities