Rock Identifier

Category

Mineral Specimen

Browse mineral specimen specimens identified by the Rock Identifier community.

Amazonite (Potassium feldspar (Microcline), K(AlSi3O8)) — mineral

Amazonite

Potassium feldspar (Microcline), K(AlSi3O8)

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

Amethyst (Tumbled/Polished)

Silicon Dioxide (SiO2) with iron impurities

Quartz with Pyrite (Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)) — mineral

Quartz with Pyrite

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)

Tree Agate (or Moss Agate) (Dendritic Agate (Silicon Dioxide - SiO2)) — mineral

Tree Agate (or Moss Agate)

Dendritic Agate (Silicon Dioxide - SiO2)

Precious Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Precious Opal

Hydrated Silica (SiO2·nH2O)

Red Jasper (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Ferruginous Quartz (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Crackled Quartz (Blue Dyed) (Silicon Dioxide (SiO2) with anthropogenic dye) — mineral

Crackled Quartz (Blue Dyed)

Silicon Dioxide (SiO2) with anthropogenic dye

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Aquamarine with Ruby Accent (Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)) — mineral

Aquamarine with Ruby Accent

Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)

Yellow Jasper (Silicon Dioxide (SiO2)) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2)

Lapis Lazuli (Lazurite crystals on Marble) (Lazurite / (Na,Ca)8[(S,Cl,SO4,OH)2|(AlSiO4)6]) — metamorphic

Lapis Lazuli (Lazurite crystals on Marble)

Lazurite / (Na,Ca)8[(S,Cl,SO4,OH)2|(AlSiO4)6]

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Dyed Pink Agate Slice (Cryptocrystalline variety of Quartz (SiO2)) — mineral

Dyed Pink Agate Slice

Cryptocrystalline variety of Quartz (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Flesh-colored or Rose Quartz variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Flesh-colored or Rose Quartz variety)

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Green Calcite (Onyx Marble) (Calcium Carbonate (CaCO3)) — mineral

Green Calcite (Onyx Marble)

Calcium Carbonate (CaCO3)

Amber (Dark/Black Variety) (Succinite (Resinite), C10H16O) — mineral

Amber (Dark/Black Variety)

Succinite (Resinite), C10H16O

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Silver (Morgan Dollar) (Native Silver (Ag) - 90% Silver, 10% Copper alloy) — mineral

Silver (Morgan Dollar)

Native Silver (Ag) - 90% Silver, 10% Copper alloy

Quartz (Milky or Cloudy variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Cloudy variety)

Silicon Dioxide (SiO2)

Pink Chalcedony (Agate/Jasper blend) (Silicon Dioxide (SiO₂)) — mineral

Pink Chalcedony (Agate/Jasper blend)

Silicon Dioxide (SiO₂)

Red Jasper (Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)

Quartz Vein in Host Rock (Silicon Dioxide (SiO2) within Sedimentary or Igneous Matrix) — igneous

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Sedimentary or Igneous Matrix

Painted River Rock (Anthropogenic-modified Siliciclastic Sedimentary Rock) — Sedimentary

Painted River Rock

Anthropogenic-modified Siliciclastic Sedimentary Rock

Pink Granite (Phaneritic Felsic Igneous Rock) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock

Jasper (Silicon dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Note: Item is not a geological specimen (Homo sapiens (Dermal Appendage: Pilus)) — Organic / Biological

Note: Item is not a geological specimen

Homo sapiens (Dermal Appendage: Pilus)

Organic / Biological

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

Fluorite Octahedron

Fluorite (Calcium Fluoride, CaF2)

Fluorite (likely Green Fluorite variant) (Calcium Fluoride (CaF2)) — mineral

Fluorite (likely Green Fluorite variant)

Calcium Fluoride (CaF2)

Chert (Jasper/Flint variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Red Jasper with Quartz Veining (Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions) — sedimentary

Red Jasper with Quartz Veining

Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions

Carnelian (SiO2 (Chalcedony with iron oxide impurities)) — mineral

Carnelian

SiO2 (Chalcedony with iron oxide impurities)

Quartz Geode (River Cobble) (Silicon Dioxide (SiO2)) — mineral

Quartz Geode (River Cobble)

Silicon Dioxide (SiO2)

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

Granite Pebble (River Rock)

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

Granite with Quartz Vein (Phaneritic Felsic Igneous Rock (composed of Quartz [SiO2], Feldspar, and Mica)) — igneous

Granite with Quartz Vein

Phaneritic Felsic Igneous Rock (composed of Quartz [SiO2], Feldspar, and Mica)

Labradorite ((Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)) — mineral

Labradorite

(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)