Rock Identifier

Category

Mineral And Organic Gemstone

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

Learn about Mineral And Organic Gemstone in the encyclopedia

Black Shale

Black Shale

Jet

Jet

Malachite

Malachite

Bumblebee Jasper

Bumblebee Jasper

Andesine

Andesine

Aragonite

Aragonite

Dolomite

Dolomite

Albite

Albite

Pyrrhotite

Pyrrhotite

Andesite

Andesite

Andalusite

Andalusite

Andamooka Opal

Andamooka Opal

Carnelian (Carnelian Agate) (Silicon dioxide (SiO2)) — mineral

Carnelian (Carnelian Agate)

Silicon dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine/Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine/Iron-Stained Quartz)

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Silicon Dioxide (SiO2)

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

Carnelian

Carnelian (Silicon Dioxide: SiO2 with Iron Oxide impurities)

Prase quartz with actinolite inclusions (Silicon dioxide (SiO2) with Calcium Magnesium Iron Silicate Hydroxide inclusions) — mineral

Prase quartz with actinolite inclusions

Silicon dioxide (SiO2) with Calcium Magnesium Iron Silicate Hydroxide inclusions

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

Black Opal

Hydrated Silica (SiO2·nH2O)

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

Quartz (Clear Quartz)

Silicon Dioxide (SiO2)

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

Quartz (Milky Variant)

Quartz (Silicon Dioxide, SiO2)

Potassium Feldspar (Orthoclase) (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Potassium Feldspar (Orthoclase)

KAlSi3O8 (Potassium Aluminum Silicate)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Peach Moonstone (Potassium Aluminum Silicate (KAlSi3O8)) — mineral

Peach Moonstone

Potassium Aluminum Silicate (KAlSi3O8)

Red Quartz (Ferruginous Quartz) (Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)) — mineral

Red Quartz (Ferruginous Quartz)

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Labradorite

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

Olivine (Peridot) (Magnesium Iron Silicate (Mg, Fe)2SiO4) — mineral

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4

Smoky Quartz Geode Cluster (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz Geode Cluster

Silicon Dioxide (SiO2)

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

Garnet

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

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

Sunstone

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

Garnet (Pyrope or Almandine) (Silicate (X3Y2Si3O12)) — mineral

Garnet (Pyrope or Almandine)

Silicate (X3Y2Si3O12)

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

Amethyst Quartz (Chevron Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Smoky Quartz (Silicon Dioxide (SiO2) with natural radiation induced color centers) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with natural radiation induced color centers

Aquamarine (Beryl (Be3Al2Si6O18 with iron impurities)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Chalcedony (Agate Nodules) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate Nodules)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Rainbow Moonstone (White Labradorite (formula: (Na,Ca)(Al,Si)4O8)) — mineral

Rainbow Moonstone

White Labradorite (formula: (Na,Ca)(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

Clear Quartz (Rock Crystal) (Quartz (Silicon Dioxide, SiO2)) — mineral

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky/Yellowish variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Yellowish variety)

Silicon Dioxide (SiO2)

Green Chalcedony (Green Agate) (Silicon Dioxide (SiO2)) — mineral

Green Chalcedony (Green Agate)

Silicon Dioxide (SiO2)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Carnelian (Carnelian Agate) (Carnelian (Silicon Dioxide - SiO2)) — mineral

Carnelian (Carnelian Agate)

Carnelian (Silicon Dioxide - SiO2)

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

Labradorite

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

Clear Quartz Sphere (Quartz (Silicon Dioxide, SiO2)) — mineral

Clear Quartz Sphere

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2

Turquoise (Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Feldspar (Orthoclase) (Potassium Feldspar (KAlSi3O8)) — mineral

Feldspar (Orthoclase)

Potassium Feldspar (KAlSi3O8)

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

Rose Quartz

Quartz (Silicon Dioxide) - SiO2