Rock Identifier

Category

Organic Mineraloid And Mineral

Browse organic mineraloid and mineral specimens identified by the Rock Identifier community.

Carnelian (Carnelian (Silicon Dioxide: SiO2 with Iron Oxide impurities)) — mineral

Carnelian

Carnelian (Silicon Dioxide: SiO2 with Iron Oxide impurities)

Rose Quartz (SiO2 (Silicon Dioxide with trace inclusions of Phosphorus, Aluminum, or Titanium)) — mineral

Rose Quartz

SiO2 (Silicon Dioxide with trace inclusions of Phosphorus, Aluminum, or Titanium)

Sodalite (Sodalite (Na8Al6Si6O24Cl2)) — mineral

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Olivine (Peridot when gem-quality) (Magnesium Iron Silicate (Mg,Fe)2SiO4) — mineral

Olivine (Peridot when gem-quality)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Amethyst (Crystalline Silicon Dioxide with Iron impurities (SiO2)) — mineral

Amethyst

Crystalline Silicon Dioxide with Iron impurities (SiO2)

Fuchsite (Chromium-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]) — mineral

Fuchsite

Chromium-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]

Aquamarine (Beryl (Be₃Al₂Si‑₆O₁₈)) — mineral

Aquamarine

Beryl (Be₃Al₂Si‑₆O₁₈)

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

Diamond (in jewelry)

Carbon (C)

Amazonite (K(AlSi3O8)) — mineral

Amazonite

K(AlSi3O8)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Opal (Hydrated amorphous form of silica (SiO2·nH2O)) — mineral

Opal

Hydrated amorphous form of silica (SiO2·nH2O)

Garnet (Garnet Group (often Pyrope or Almandine); X3Y2(SiO4)3) — mineral

Garnet

Garnet Group (often Pyrope or Almandine); X3Y2(SiO4)3

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

Labradorite

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

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese

Almandine Garnet (Almandine (Fe3Al2Si3O12)) — mineral

Almandine Garnet

Almandine (Fe3Al2Si3O12)

Garnet (likely Almandine) (Almandine - Fe3Al2(SiO4)3) — mineral

Garnet (likely Almandine)

Almandine - Fe3Al2(SiO4)3

Arsenopyrite (Arsenopyrite (FeAsS)) — mineral

Arsenopyrite

Arsenopyrite (FeAsS)

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite) — mineral

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Rhodonite (Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3

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

Labradorite

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

Amazonite (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Red Cubic Zirconia (Simulated Garnet) (Zirconium Dioxide (ZrO2)) — mineral

Red Cubic Zirconia (Simulated Garnet)

Zirconium Dioxide (ZrO2)

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

Peridot

Olivine (Mg, Fe)2SiO4

Caribbean Calcite (Aragonite and Calcite (CaCO3)) — mineral

Caribbean Calcite

Aragonite and Calcite (CaCO3)

Quartz / Quartzite (Silicon Dioxide (SiO2)) — mineral

Quartz / Quartzite

Silicon Dioxide (SiO2)

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

Chalcedony Geode Fragment

Silicon Dioxide (SiO2)

Quartz Geode (Crystalline Quartz (SiO2) within a sedimentary or volcanic host) — mineral

Quartz Geode

Crystalline Quartz (SiO2) within a sedimentary or volcanic host

Magnetite / Ironstone (Iron(II,III) oxide (Fe3O4)) — mineral

Magnetite / Ironstone

Iron(II,III) oxide (Fe3O4)

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

Quartz (Chalcedony)

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Dyed Agate (SiO2 (Silicon Dioxide)) — mineral

Dyed Agate

SiO2 (Silicon Dioxide)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz Pebble with Inclusions (Crystalline Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebble with Inclusions

Crystalline Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide - SiO2)