Rock Identifier

Category

Mineral Specimen

Browse mineral specimen specimens identified by the Rock Identifier community.

Learn about Mineral Specimen in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Aquamarine Matrix

Aquamarine Matrix

Morganite Crystal

Morganite Crystal

Emerald Crystal

Emerald Crystal

Aquamarine Crystal

Aquamarine Crystal

Mushroom Tourmaline

Mushroom Tourmaline

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

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

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Gold-Bearing Quartz Ore (Crystalline Silicon Dioxide (SiO2) with Trace Aurum (Au)) — mineral

Gold-Bearing Quartz Ore

Crystalline Silicon Dioxide (SiO2) with Trace Aurum (Au)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Conglomerate (Sedimentary Conglomerate with Basaltic Clast) — sedimentary

Conglomerate

Sedimentary Conglomerate with Basaltic Clast

River Stone (likely Mudstone or Siltstone) (Lutite (Clastic sedimentary rock composed of clay and silt-sized particles)) — sedimentary

River Stone (likely Mudstone or Siltstone)

Lutite (Clastic sedimentary rock composed of clay and silt-sized particles)

Quartzite Pebble (Microcrystalline Quartz / Chert) (Silicon Dioxide (SiO2)) — sedimentary

Quartzite Pebble (Microcrystalline Quartz / Chert)

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Milky and Smoky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky and Smoky variety)

Silicon Dioxide (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

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

Chalcedony (Agate)

Chalcedony (Cryptocrystalline Quartz, SiO2)

Orbicular Jasper (Ocean Jasper variant) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Orbicular Jasper (Ocean Jasper variant)

Silicon Dioxide (SiO2) with iron oxide inclusions

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

Quartz (Tumbled/Water-worn)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Amygdaloidal Basalt (Basalt (Igneous Volcanic Rock with secondary mineral infilling)) — igneous

Amygdaloidal Basalt

Basalt (Igneous Volcanic Rock with secondary mineral infilling)

Travertine (Tufa) (Chemical Sedimentary Rock / Travertine (CaCO3)) — sedimentary

Travertine (Tufa)

Chemical Sedimentary Rock / Travertine (CaCO3)

Amethyst Geode (polished heart-cut) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst Geode (polished heart-cut)

Silicon Dioxide (SiO2) with iron impurities

Sandstone nugget (Arenite (primarily Quartz SiO2)) — sedimentary

Sandstone nugget

Arenite (primarily Quartz SiO2)

Schist (Mica Schist (Foliated Metamorphic Rock)) — metamorphic

Schist

Mica Schist (Foliated Metamorphic Rock)

Fluorite on Matrix (Calcium Fluoride (CaF2)) — mineral

Fluorite on Matrix

Calcium Fluoride (CaF2)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Chalcedony (Common Agate pebble) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Common Agate pebble)

Silicon Dioxide (SiO2)

Diamond (Cluster Ring) (Carbon (C)) — mineral

Diamond (Cluster Ring)

Carbon (C)

Cubic Zirconia (Diamond Simulant) (Zirconium Dioxide (ZrO2)) — mineral

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

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

Diamond (in a jewelry setting)

Carbon (C)

Diamond (faceted) (Diamond (Pure Carbon, C)) — mineral

Diamond (faceted)

Diamond (Pure Carbon, C)

Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Smoky Quartz (with Iron Oxidation) (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz (with Iron Oxidation)

Silicon Dioxide (SiO2)

Sandstone (Arenite (predominantly SiO2)) — sedimentary

Sandstone

Arenite (predominantly SiO2)

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

Quartz (Iron-Stained / Yellow Quartz)

Silicon Dioxide (SiO2)

Basalt with Large Augite Phenocrysts (Porphyritic Basalt (containing Ca(Mg,Fe,Al)(Al,Si)2O6)) — igneous

Basalt with Large Augite Phenocrysts

Porphyritic Basalt (containing Ca(Mg,Fe,Al)(Al,Si)2O6)

Quartz (Common or Milky) (Silicon Dioxide (SiO2)) — mineral

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

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

Quartz (Milky or Smoky)

Silicon Dioxide (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

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

Diamond

Diamond (Pure Carbon, C)

Diamond in Gold Setting (Diamond (C - pure carbon)) — mineral

Diamond in Gold Setting

Diamond (C - pure carbon)

Diamond (Pure Carbon (C)) — mineral

Diamond

Pure Carbon (C)

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

Diamond (in a jewelry setting)

Carbon (C)

Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)