Rock Identifier

Category

Crystal

Browse crystal specimens identified by the Rock Identifier community.

Quartz (Silicon dioxide (SiO2)) — Mineral

Quartz

Silicon dioxide (SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Rough Citrine Quartz (Silicon Dioxide (SiO2) with ferric iron impurities) — mineral

Rough Citrine Quartz

Silicon Dioxide (SiO2) with ferric iron impurities

Granite (Granite (Phaneritic Igneous Rock)) — igneous

Granite

Granite (Phaneritic Igneous Rock)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Rose Quartz Beads (SiO2 (Silicon Dioxide with trace inclusions of Ti, Fe, or Mn)) — mineral

Rose Quartz Beads

SiO2 (Silicon Dioxide with trace inclusions of Ti, Fe, or Mn)

Amber (Amber (Succinite), fossilized tree resin) — Mineraloid

Amber

Amber (Succinite), fossilized tree resin

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

Rose Quartz Chips

Quartz (Silicon Dioxide - SiO2)

Amber (Resinite / Fossilized Tree Resin) — mineral

Amber

Resinite / Fossilized Tree Resin

Rose Quartz (Silicon dioxide (SiO2)) — mineral

Rose Quartz

Silicon dioxide (SiO2)

Amber (with potentially inclusions) (Succinite (Fossilized Tree Resin)) — Mineraloid

Amber (with potentially inclusions)

Succinite (Fossilized Tree Resin)

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

Quartz (Smoky/Grey variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Grey variety)

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Grey Chalcedony (Agate)

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

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

Rose Quartz (Silicon dioxide (SiO2)) — mineral

Rose Quartz

Silicon dioxide (SiO2)

Chalcedony (Botryoidal/Tumbled Agate) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Botryoidal/Tumbled Agate)

Silicon Dioxide (SiO2)

Agate Geode (Chalcedony (cryptocrystalline SiO2)) — mineral

Agate Geode

Chalcedony (cryptocrystalline SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Druzy on Basalt (Silicon Dioxide (SiO2) on Mafic Volcanic Rock) — Mineral on Igneous Rock

Quartz Druzy on Basalt

Silicon Dioxide (SiO2) on Mafic Volcanic Rock

Mineral on Igneous Rock

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite (Metamorphic rock (primarily SiO2)) — metamorphic

Quartzite

Metamorphic rock (primarily SiO2)

Dumortierite Quartz (Blue Quartz) (Al7BO3(SiO4)3O3 (Aluminum Boro-silicate included in Quartz)) — mineral

Dumortierite Quartz (Blue Quartz)

Al7BO3(SiO4)3O3 (Aluminum Boro-silicate included in Quartz)

Black Obsidian (Volcanic Glass (SiO2)) — igneous

Black Obsidian

Volcanic Glass (SiO2)

Basalt with Plagioclase Phenocrysts (Porphyritic Basalt) — igneous

Basalt with Plagioclase Phenocrysts

Porphyritic Basalt

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Dalmatian Stone (Dalmatian Stone (a fine-grained igneous rock, often misidentified as Dalmatian Jasper)) — igneous

Dalmatian Stone

Dalmatian Stone (a fine-grained igneous rock, often misidentified as Dalmatian Jasper)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Moonstone (Orthoclase (Potassium Feldspar) - (K,Na)AlSi3O8) — mineral

Moonstone

Orthoclase (Potassium Feldspar) - (K,Na)AlSi3O8

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

White Quartz (Milky Quartz Mushroom)

Silicon Dioxide (SiO2)

Amazonite in Pegmatite Matrix with Smoky Quartz (K(AlSi3O8) - Microcline (var. Amazonite) with SiO2 (Quartz)) — Mineral

Amazonite in Pegmatite Matrix with Smoky Quartz

K(AlSi3O8) - Microcline (var. Amazonite) with SiO2 (Quartz)

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

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

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

Olivine

Olivine group (Mg, Fe)2SiO4

Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities and natural radiation) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities and natural radiation

Smoky Quartz (Silicon Dioxide (SiO₂)) — mineral

Smoky Quartz

Silicon Dioxide (SiO₂)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)