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

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Ruby (or potential synthetic/imitation) (Corundum (Al2O3)) — gemstone

Ruby (or potential synthetic/imitation)

Corundum (Al2O3)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz (Variety: Citrine or Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Variety: Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Limonite / Goethite Ironstone Concretion (FeO(OH)·nH2O (Hydrated Iron Oxide)) — mineral

Limonite / Goethite Ironstone Concretion

FeO(OH)·nH2O (Hydrated Iron Oxide)

Limonite and Goethite (Ironstone) (Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)) — sedimentary

Limonite and Goethite (Ironstone)

Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)

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

Yellow Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

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

Citrine or Yellow Quartz

Silicon Dioxide (SiO2) with iron impurities

Slag Glass (Anthropogenic Amorphous Silicon Dioxide) — mineral

Slag Glass

Anthropogenic Amorphous Silicon Dioxide

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

Citrine

Crystalline Quartz (SiO2) with iron impurities

Goldstone (Brown) (Aventurine Glass (Silicon Dioxide infused with Copper crystals)) — mineraloid (man-made glass)

Goldstone (Brown)

Aventurine Glass (Silicon Dioxide infused with Copper crystals)

mineraloid (man-made glass)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Aquamarine and clear quartz (Aquamarine (Be3Al2Si6O18), Quartz (SiO2)) — Mineral

Aquamarine and clear quartz

Aquamarine (Be3Al2Si6O18), Quartz (SiO2)

Diamond (Native Carbon (C)) — gemstone

Diamond

Native Carbon (C)

Chakra Stone Tower (Composite Multi-Mineral) (Crystalline Silicon Dioxide composite (SiO2) with various inclusions) — mineral

Chakra Stone Tower (Composite Multi-Mineral)

Crystalline Silicon Dioxide composite (SiO2) with various inclusions

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine/Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine/Iron-Stained Quartz)

Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Amethyst (Tumbled) (Silicon Dioxide (Quartz) with traces of Iron; SiO2) — mineral

Amethyst (Tumbled)

Silicon Dioxide (Quartz) with traces of Iron; SiO2

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

Smoky Quartz (Polished)

Silicon Dioxide (SiO2)

Red Beryl in Rhyolite (Beryllium Aluminum Cyclosilicate with Quartz/Feldspar matrix (Be3Al2Si6O18)) — mineral

Red Beryl in Rhyolite

Beryllium Aluminum Cyclosilicate with Quartz/Feldspar matrix (Be3Al2Si6O18)

Pumice (Pumice (Amorphous silicate glass with trapped gas bubbles)) — igneous

Pumice

Pumice (Amorphous silicate glass with trapped gas bubbles)

Chert (Siliceous Pebble) (Microcrystalline / Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Siliceous Pebble)

Microcrystalline / Cryptocrystalline Quartz (SiO2)

Native Silver Nugget (Silver (Ag)) — mineral

Native Silver Nugget

Silver (Ag)

Moqui Marble (Iron Concretion) (Goethite/Hematite Cement Sandstone Concretion) — sedimentary

Moqui Marble (Iron Concretion)

Goethite/Hematite Cement Sandstone Concretion

Tangerine Quartz (Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)) — mineral

Tangerine Quartz

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Chert (Yellow Jasper) (Silicon dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (Yellow Jasper)

Silicon dioxide (SiO2) - Microcrystalline Quartz

Chert (with Limestone cortex) (Silicon Dioxide (SiO2)) — sedimentary

Chert (with Limestone cortex)

Silicon Dioxide (SiO2)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Red Jasper (Red Jasper (SiO2 with Hematite inclusions)) — mineral

Red Jasper

Red Jasper (SiO2 with Hematite inclusions)

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

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

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Dalmatian Stone (Aplite (often incorrectly called Dalmatian Jasper)) — igneous

Dalmatian Stone

Aplite (often incorrectly called Dalmatian Jasper)

Pearl (Biogenic CaCO3 (Aragonite)) — mineral

Pearl

Biogenic CaCO3 (Aragonite)

Diamond (or Cut Clear Gemstone) (C (Native Carbon)) — gemstone

Diamond (or Cut Clear Gemstone)

C (Native Carbon)

Tumbled milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Petoskey Stone (Hexagonaria percarinata (Silicified/Calcitic)) — fossil

Petoskey Stone

Hexagonaria percarinata (Silicified/Calcitic)