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

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

Druzy Quartz on Matrix

Silicon Dioxide (SiO2)

Calcite on Limestone (Calcium Carbonate (CaCO3) on Sedimentary Rock) — mineral

Calcite on Limestone

Calcium Carbonate (CaCO3) on Sedimentary Rock

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Chalcedony (Agate nodule fragment) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate nodule fragment)

Silicon Dioxide (SiO2)

Quartzite with Dendritic Manganese Oxide Inclusions (Metamorphic Quartzite (SiO2 with Mn-oxides)) — metamorphic

Quartzite with Dendritic Manganese Oxide Inclusions

Metamorphic Quartzite (SiO2 with Mn-oxides)

Quartz-Tourmaline Pebble (Quartz with Tourmaline inclusions) — igneous

Quartz-Tourmaline Pebble

Quartz with Tourmaline inclusions

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

Quartz Druzy on Matrix

Silicon Dioxide (SiO2)

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Granite with Tourmaline (Felsic intrusive igneous rock containing schorl (tourmaline)) — igneous

Granite with Tourmaline

Felsic intrusive igneous rock containing schorl (tourmaline)

Peridot in Matrix (Olivine ((Mg,Fe)2SiO4)) — mineral

Peridot in Matrix

Olivine ((Mg,Fe)2SiO4)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz with Sericite and Cinnabar (Silicon Dioxide (SiO2) with muscovite/sericite and mercury sulfide (HgS)) — mineral

Quartz with Sericite and Cinnabar

Silicon Dioxide (SiO2) with muscovite/sericite and mercury sulfide (HgS)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Garnet in Matrix (Schist or Quartz) (Almandine Garnet, Fe3Al2(SiO4)3) — metamorphic

Garnet in Matrix (Schist or Quartz)

Almandine Garnet, Fe3Al2(SiO4)3

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Raw Topaz (or Smoky Quartz) (Al2SiO4(F,OH)2 / Silicon Dioxide (SiO2)) — mineral

Raw Topaz (or Smoky Quartz)

Al2SiO4(F,OH)2 / Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Ferruginous Quartz (Ferruginous Quartz (Silicon Dioxide + Iron Oxide, SiO2 + Fe2O3)) — mineral

Ferruginous Quartz

Ferruginous Quartz (Silicon Dioxide + Iron Oxide, SiO2 + Fe2O3)

Chalcedony with Druzy Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Chalcedony with Druzy Quartz Geode

Silicon Dioxide (SiO2)

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

Prehnite

Ca2Al(AlSi3O10)(OH)2

Milky quartz-bearing rock, possibly quartzite (Quartz (SiO₂), likely in a quartzite or quartz-rich metamorphic matrix) — metamorphic

Milky quartz-bearing rock, possibly quartzite

Quartz (SiO₂), likely in a quartzite or quartz-rich metamorphic matrix

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

Amethyst

Quartz (Silicon Dioxide, SiO2)

Quartz with Actinolite or Tourmaline inclusions (Silicon Dioxide (SiO2) with Ca2(Mg,Fe)5Si8O22(OH)2 or Tourmaline group inclusions) — igneous

Quartz with Actinolite or Tourmaline inclusions

Silicon Dioxide (SiO2) with Ca2(Mg,Fe)5Si8O22(OH)2 or Tourmaline group inclusions

Blue Quartz with Graphite/Tourmaline Inclusions (Silicon Dioxide (SiO2) with Carbon (C) or Schorl elements) — mineral

Blue Quartz with Graphite/Tourmaline Inclusions

Silicon Dioxide (SiO2) with Carbon (C) or Schorl elements

Blue Apatite (Fluorapatite (Ca5(PO4)3(F,Cl,OH))) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3(F,Cl,OH))

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Amethyst (Quartz (SiO2)) — gemstone

Amethyst

Quartz (SiO2)

Amethyst (Quartz (SiO2)) — mineral

Amethyst

Quartz (SiO2)

Aquamarine (Beryl) (Beryllium Aluminum Silicate - Be3Al2Si6O18) — gemstone

Aquamarine (Beryl)

Beryllium Aluminum Silicate - Be3Al2Si6O18

Quartz with Feldspar and Mica (Pegmatite Fragment) (Granitic Pegmatite) — igneous

Quartz with Feldspar and Mica (Pegmatite Fragment)

Granitic Pegmatite

Chalcopyrite on Quartz (CuFeS2 (Chalcopyrite) with SiO2 (Quartz)) — mineral

Chalcopyrite on Quartz

CuFeS2 (Chalcopyrite) with SiO2 (Quartz)

Amazonite (Microcline Feldspar) (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Amazonite (Microcline Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Blue Lace Agate (Silicon Dioxide (Chalcedony variety), SiO2) — gemstone

Blue Lace Agate

Silicon Dioxide (Chalcedony variety), SiO2

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz with Tourmaline (Silicon Dioxide (SiO2) with complex cyclosilicate inclusions) — mineral

Quartz with Tourmaline

Silicon Dioxide (SiO2) with complex cyclosilicate inclusions

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz-bearing Pegmatite with Metallic Sulfides (Pegmatite / Quartz-Feldspar Matrix with Pyrite and Mica) — igneous

Quartz-bearing Pegmatite with Metallic Sulfides

Pegmatite / Quartz-Feldspar Matrix with Pyrite and Mica