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

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Druzy Quartz on Quartz Base (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz on Quartz Base

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Blue tumbled stone, possibly sodalite (Likely sodalite (Na₈(Al₆Si₆O₂₄)Cl₂); identification is uncertain from the image) — mineral

Blue tumbled stone, possibly sodalite

Likely sodalite (Na₈(Al₆Si₆O₂₄)Cl₂); identification is uncertain from the image

Goldstone (likely blue-free synthetic goldstone pendant) (Synthetic aventurine glass; silica glass with dispersed metallic copper crystals) — mineral

Goldstone (likely blue-free synthetic goldstone pendant)

Synthetic aventurine glass; silica glass with dispersed metallic copper crystals

Goethite (Goethite (FeO(OH))) — mineral

Goethite

Goethite (FeO(OH))

Peacock Ore (Bornite (Cu5FeS4) or Acid-Treated Chalcopyrite (CuFeS2)) — mineral

Peacock Ore

Bornite (Cu5FeS4) or Acid-Treated Chalcopyrite (CuFeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Aquamarine (Beryl (Be3Al2Si6O18)) — gemstone

Aquamarine

Beryl (Be3Al2Si6O18)

Quartz Pebble (Iron-Stained) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Iron-Stained)

Silicon Dioxide (SiO2)

Porphyritic Basalt (Basalt (porphyritic texture)) — igneous

Porphyritic Basalt

Basalt (porphyritic texture)

Emerald (Beryl (Be3Al2(SiO3)6)) — gemstone

Emerald

Beryl (Be3Al2(SiO3)6)

Grape Agate (Botryoidal Amethystine Chalcedony (SiO2)) — mineral

Grape Agate

Botryoidal Amethystine Chalcedony (SiO2)

Amazonite (Microcline-type Feldspar (KAlSi3O8)) — mineral

Amazonite

Microcline-type Feldspar (KAlSi3O8)

Chrysocolla (in Host Rock) (Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) — mineral

Chrysocolla (in Host Rock)

Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

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

Citrine (Heat-treated Amethyst)

Silicon Dioxide (SiO2) with iron impurities

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Amethyst

SiO2 (Silicon Dioxide with iron impurities)

Rough Tanzanite (Zoisite (Ca2Al3(SiO4)3(OH))) — mineral

Rough Tanzanite

Zoisite (Ca2Al3(SiO4)3(OH))

Chrysocolla in Quartz (Gem Silica) (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / SiO2 (Quartz)) — mineral

Chrysocolla in Quartz (Gem Silica)

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / SiO2 (Quartz)

Prehnite (Prehnite - Ca2Al(AlSi3O10)(OH)2) — mineral

Prehnite

Prehnite - Ca2Al(AlSi3O10)(OH)2

Amazonite (Microcline (Amazonstone), K(AlSi3O8)) — mineral

Amazonite

Microcline (Amazonstone), K(AlSi3O8)

Likely weathered pebble or mineral fragment (Indeterminate; possibly quartz-rich stone, iron-stained feldspar, or a small chert fragment) — mineral

Likely weathered pebble or mineral fragment

Indeterminate; possibly quartz-rich stone, iron-stained feldspar, or a small chert fragment

Chrysocolla in Matrix (Chrysocolla (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla in Matrix

Chrysocolla (Cu,Al)2H2Si2O5(OH)4·nH2O

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — gemstone

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Jasper with Epidote (Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))) — sedimentary

Jasper with Epidote

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))

Beryl (Emerald Variety) (Beryllium aluminum silicate (Be3Al2(SiO3)6)) — mineral

Beryl (Emerald Variety)

Beryllium aluminum silicate (Be3Al2(SiO3)6)

Aura Quartz (Coated Quartz) (Silicon Dioxide (SiO2) coated with vaporized metals) — mineral

Aura Quartz (Coated Quartz)

Silicon Dioxide (SiO2) coated with vaporized metals

Likely weathered brown rock fragment (Indeterminate; possibly iron-oxide-stained sandstone or laterite) — sedimentary

Likely weathered brown rock fragment

Indeterminate; possibly iron-oxide-stained sandstone or laterite

Likely quartz-rich pebble or weathered limestone fragment (Indeterminate; possibly microcrystalline quartz (SiO₂) or calcite-rich limestone (CaCO₃)) — mineral

Likely quartz-rich pebble or weathered limestone fragment

Indeterminate; possibly microcrystalline quartz (SiO₂) or calcite-rich limestone (CaCO₃)

Olivine (Peridotite) (Magnesium iron silicate (Mg, Fe)2SiO4) — igneous

Olivine (Peridotite)

Magnesium iron silicate (Mg, Fe)2SiO4

Small gray rock fragment (Indeterminate; possibly quartz-rich granite, chert, or concrete-like silicate material) — mineral

Small gray rock fragment

Indeterminate; possibly quartz-rich granite, chert, or concrete-like silicate material

Dark rock/mineral fragment (Undetermined; possibly magnetite-rich basalt or iron sulfide) — mineral

Dark rock/mineral fragment

Undetermined; possibly magnetite-rich basalt or iron sulfide

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

Quartz (Quartz Pebble)

Silicon Dioxide (SiO2)

Small rounded mineral pebble, possibly quartz (Uncertain; likely microcrystalline or crystalline SiO₂ (quartz), potentially with iron-oxide staining) — mineral

Small rounded mineral pebble, possibly quartz

Uncertain; likely microcrystalline or crystalline SiO₂ (quartz), potentially with iron-oxide staining

Amazonite (Microcline (KAlSi3O8)) — mineral

Amazonite

Microcline (KAlSi3O8)

Copper Ore with Chalcocite (Copper sulfide (Cu2S) with associated copper-bearing minerals) — mineral

Copper Ore with Chalcocite

Copper sulfide (Cu2S) with associated copper-bearing minerals

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Rough Diamond (or Herkimer Diamond Quartz) (Diamond (C) or Quartz (SiO2)) — mineral

Rough Diamond (or Herkimer Diamond Quartz)

Diamond (C) or Quartz (SiO2)