Rock Identifier

Category

Crystal

Browse crystal specimens identified by the Rock Identifier community.

Learn about Crystal in the encyclopedia

Amethyst

Ametrine

Apophyllite

Aquamarine Crystal

Aquamarine Crystal

Aventurine

Blue Quartz

Brandberg Amethyst

Brandberg Amethyst

Cactus Quartz

Cathedral Quartz

Cathedral Quartz

Chevron Amethyst

Chevron Amethyst

Clear Quartz

Danburite

Iridescent bismuth crystal (Bismuth (Bi), artificially crystallized and likely oxidized/coated) — mineral

Iridescent bismuth crystal

Bismuth (Bi), artificially crystallized and likely oxidized/coated

Calcite crystal cluster (Calcite (calcium carbonate, CaCO₃)) — mineral

Calcite crystal cluster

Calcite (calcium carbonate, CaCO₃)

Green fluorite crystal (Fluorite (calcium fluoride, CaF₂)) — mineral

Green fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Tumbled quartz crystal (Quartz (silicon dioxide, SiO₂)) — mineral

Tumbled quartz crystal

Quartz (silicon dioxide, SiO₂)

Smoky quartz crystal (Quartz, silicon dioxide (SiO₂), brown variety colored by irradiation and trace aluminum) — mineral

Smoky quartz crystal

Quartz, silicon dioxide (SiO₂), brown variety colored by irradiation and trace aluminum

Smoky quartz crystal (Quartz, silicon dioxide (SiO₂), likely smoky variety) — mineral

Smoky quartz crystal

Quartz, silicon dioxide (SiO₂), likely smoky variety

Quartz crystal cluster (Quartz (silicon dioxide, SiO₂)) — mineral

Quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Clear quartz crystal (Quartz (silicon dioxide, SiO₂)) — mineral

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Clear quartz crystal (Quartz (silicon dioxide, SiO₂)) — mineral

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Green fluorite crystal (Fluorite (calcium fluoride, CaF₂)) — mineral

Green fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Orange calcite crystal (Calcite (calcium carbonate, CaCO₃)) — mineral

Orange calcite crystal

Calcite (calcium carbonate, CaCO₃)

Bismuth crystal aggregate (Bismuth (Bi), commonly laboratory-grown) — mineral

Bismuth crystal aggregate

Bismuth (Bi), commonly laboratory-grown

Quartz crystal cluster (Quartz (silicon dioxide, SiO₂)) — mineral

Quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Rose quartz crystal (Quartz, silicon dioxide (SiO₂), pink variety) — mineral

Rose quartz crystal

Quartz, silicon dioxide (SiO₂), pink variety

Calcite crystal cluster (Calcite (calcium carbonate, CaCO₃), likely honey or amber calcite) — mineral

Calcite crystal cluster

Calcite (calcium carbonate, CaCO₃), likely honey or amber calcite

Iridescent bismuth crystal (Bismuth (Bi), commonly laboratory-grown and oxide-coated) — mineral

Iridescent bismuth crystal

Bismuth (Bi), commonly laboratory-grown and oxide-coated

Milky quartz crystal (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz crystal

Quartz, silicon dioxide (SiO₂)

Smoky quartz crystal (Quartz (SiO₂), naturally irradiated smoky variety) — mineral

Smoky quartz crystal

Quartz (SiO₂), naturally irradiated smoky variety

Calcite crystal cluster (Calcite (calcium carbonate, CaCO₃)) — mineral

Calcite crystal cluster

Calcite (calcium carbonate, CaCO₃)

Purple fluorite crystal (Fluorite (calcium fluoride, CaF₂)) — mineral

Purple fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Aragonite crystal cluster (Aragonite, orthorhombic calcium carbonate (CaCO₃)) — mineral

Aragonite crystal cluster

Aragonite, orthorhombic calcium carbonate (CaCO₃)

Quartz crystal fragment (Quartz (silicon dioxide, SiO₂), likely ordinary or smoky quartz) — mineral

Quartz crystal fragment

Quartz (silicon dioxide, SiO₂), likely ordinary or smoky quartz

Tumbled quartz crystal (Quartz (silicon dioxide, SiO₂)) — mineral

Tumbled quartz crystal

Quartz (silicon dioxide, SiO₂)

Quartz Crystal Cluster (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Green fluorite crystal (Fluorite (calcium fluoride, CaF₂)) — mineral

Green fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Clear quartz crystal (Quartz (silicon dioxide, SiO₂)) — mineral

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Quartz crystal fragment (Quartz (silicon dioxide, SiO₂)) — mineral

Quartz crystal fragment

Quartz (silicon dioxide, SiO₂)

Clear quartz crystal (Quartz (silicon dioxide, SiO₂)) — mineral

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Honey calcite crystal (Calcite (calcium carbonate, CaCO₃)) — mineral

Honey calcite crystal

Calcite (calcium carbonate, CaCO₃)

Raw quartz crystal (Quartz (silicon dioxide, SiO₂)) — mineral

Raw quartz crystal

Quartz (silicon dioxide, SiO₂)

Selenite (gypsum crystal) (Gypsum, calcium sulfate dihydrate (CaSO₄·2H₂O), likely the variety selenite) — mineral

Selenite (gypsum crystal)

Gypsum, calcium sulfate dihydrate (CaSO₄·2H₂O), likely the variety selenite

Calcite crystal fragment (Calcite (calcium carbonate, CaCO₃)) — mineral

Calcite crystal fragment

Calcite (calcium carbonate, CaCO₃)

Quartz (Raw Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Raw Crystal)

Silicon Dioxide (SiO2)

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

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear quartz crystal point (Quartz (silicon dioxide, SiO₂), likely a polished or cut crystal) — mineral

Clear quartz crystal point

Quartz (silicon dioxide, SiO₂), likely a polished or cut crystal

Honey calcite crystal cluster (Calcite (CaCO₃)) — mineral

Honey calcite crystal cluster

Calcite (CaCO₃)

Likely druzy quartz/agate specimen (Quartz (SiO₂), possibly iron-stained chalcedony or agate) — mineral

Likely druzy quartz/agate specimen

Quartz (SiO₂), possibly iron-stained chalcedony or agate

Snowflake Obsidian (Volcanic Glass with Cristobalite Inclusions) — igneous

Snowflake Obsidian

Volcanic Glass with Cristobalite Inclusions

Amethyst crystal fragment (Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation) — mineral

Amethyst crystal fragment

Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation

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

Clear Quartz Crystal

Silicon Dioxide (SiO2)

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

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

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

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)