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

Pink Fire Quartz (Quartz (SiO2) with Hematite or Lepidocrocite inclusions) — mineral

Pink Fire Quartz

Quartz (SiO2) with Hematite or Lepidocrocite inclusions

Amethyst (Silicon Dioxide (SiO2)) — mineral

Amethyst

Silicon Dioxide (SiO2)

Pyrite in Matrix (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Amethyst (Silicon Dioxide, Quartz variety (SiO2)) — gemstone

Amethyst

Silicon Dioxide, Quartz variety (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Ruby in Fuchsite (Corundum in Fuchsite (Al2O3 in K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Ruby in Fuchsite

Corundum in Fuchsite (Al2O3 in K(Al,Cr)2(AlSi3O10)(OH)2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Jasper and Chalcedony (Silicon dioxide (SiO2)) — sedimentary

Jasper and Chalcedony

Silicon dioxide (SiO2)

Blue Apatite (Calcium Phosphate Fluoride/Chloride/Hydroxide, Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Calcium Phosphate Fluoride/Chloride/Hydroxide, Ca5(PO4)3(F,Cl,OH)

Amethyst (Silicon Dioxide (SiO2)) — mineral

Amethyst

Silicon Dioxide (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Aragonite (Aragonite (CaCO3)) — mineral

Aragonite

Aragonite (CaCO3)

Jasper (Silicon Dioxide (SiO2)) — sedimentary

Jasper

Silicon Dioxide (SiO2)

Aquamarine (Beryllium Aluminum Silicate, Be3Al2(SiO3)6) — gemstone

Aquamarine

Beryllium Aluminum Silicate, Be3Al2(SiO3)6

Jasper (Microcrystalline quartz (SiO2)) — sedimentary

Jasper

Microcrystalline quartz (SiO2)

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

Amethyst

Quartz (Silicon Dioxide, SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Blue Quartz (Silicon Dioxide (SiO2) with inclusions) — mineral

Blue Quartz

Silicon Dioxide (SiO2) with inclusions

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Likely tumbled turquoise (Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O) — mineral

Likely tumbled turquoise

Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Orange chalcedony (likely carnelian) (Chalcedony, microcrystalline quartz (SiO₂); orange-red variety is called carnelian) — mineral

Orange chalcedony (likely carnelian)

Chalcedony, microcrystalline quartz (SiO₂); orange-red variety is called carnelian

Turquoise-bead jewelry (Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; the beads may be natural turquoise or a stabilized/imitation material) — gemstone

Turquoise-bead jewelry

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; the beads may be natural turquoise or a stabilized/imitation material

Polished turquoise cabochon (Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O) — gemstone

Polished turquoise cabochon

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Sunstone (Feldspar) ((Ca,Na)((Al,Si)2Si2O8) with inclusions of Hematite or Goethite) — mineral

Sunstone (Feldspar)

(Ca,Na)((Al,Si)2Si2O8) with inclusions of Hematite or Goethite

Epidote with Quartz Vein (Epidote-bearing metamorphic rock with quartz (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Epidote with Quartz Vein

Epidote-bearing metamorphic rock with quartz (Ca2(Al,Fe)3(SiO4)3(OH))

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Aquamarine

Beryl (Be3Al2(SiO3)6)

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

Amethyst Quartz Crystal

Silicon Dioxide (SiO2) with iron impurities

Ametrine (Quartz (Silicon Dioxide, SiO2)) — gemstone

Ametrine

Quartz (Silicon Dioxide, SiO2)

Quartz (Agate/Jasper pebble) (Silicon dioxide (SiO2)) — mineral

Quartz (Agate/Jasper pebble)

Silicon dioxide (SiO2)

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

Amethyst

Quartz (Silicon Dioxide, SiO2)

Prehnite (Prehnite (Ca2Al2Si3O10(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Tumbled Black Tourmaline (Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)) — mineral

Tumbled Black Tourmaline

Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz with Tourmaline inclusion (Tourmalinated Quartz) (Silicon Dioxide (SiO2) with Tourmaline inclusions) — mineral

Quartz with Tourmaline inclusion (Tourmalinated Quartz)

Silicon Dioxide (SiO2) with Tourmaline inclusions

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Quartz (Agate/Jasper pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Agate/Jasper pebble)

Silicon Dioxide (SiO2)

Sodalite (Na4Al3(SiO4)3Cl (Sodium Aluminum Silicate Chloride)) — mineral

Sodalite

Na4Al3(SiO4)3Cl (Sodium Aluminum Silicate Chloride)