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

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)

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

Quartz / Rock Crystal

Silicon Dioxide (SiO2)

Amethyst crystal point (Amethyst, purple quartz (SiO₂)) — mineral

Amethyst crystal point

Amethyst, purple quartz (SiO₂)

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

Smoky quartz crystal fragment

Quartz (SiO₂), smoky variety

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

Smoky quartz crystal

Quartz (silicon dioxide, SiO₂), smoky variety

Aquamarine (Beryl (Be3Al2Si6O18)) — gemstone

Aquamarine

Beryl (Be3Al2Si6O18)

Likely pale-green fluorite crystal (Fluorite (calcium fluoride, CaF₂)) — mineral

Likely pale-green fluorite crystal

Fluorite (calcium fluoride, CaF₂)

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

Clear quartz crystal (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

Amethyst (Pale/Raw Crystal) (Silicon dioxide with iron impurities (SiO2)) — mineral

Amethyst (Pale/Raw Crystal)

Silicon dioxide with iron impurities (SiO2)

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

Honey calcite crystal

Calcite (calcium carbonate, CaCO₃)

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

Green fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Rough smoky quartz crystal (Quartz (SiO₂), smoky variety) — mineral

Rough smoky quartz crystal

Quartz (SiO₂), smoky variety

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

Honey calcite crystal fragment

Calcite (calcium carbonate, CaCO₃)

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

Clear quartz crystal (probable)

Quartz, silicon dioxide (SiO₂)

Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Botryoidal quartz geode (Quartz (SiO₂), likely a chalcedony-lined geode with drusy quartz crystals) — mineral

Botryoidal quartz geode

Quartz (SiO₂), likely a chalcedony-lined geode with drusy quartz crystals

Tourmaline crystal (Tourmaline Group (Complex Borosilicate)) — mineral

Tourmaline crystal

Tourmaline Group (Complex Borosilicate)

Yellow calcite (rough crystal) (Calcite, CaCO₃) — mineral

Yellow calcite (rough crystal)

Calcite, CaCO₃

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

Rainbow fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Likely garnet crystal (Garnet-group silicate; species cannot be determined from the image) — mineral

Likely garnet crystal

Garnet-group silicate; species cannot be determined from the image

Amethyst cluster (Quartz (SiO₂), purple variety; trigonal crystal system) — mineral

Amethyst cluster

Quartz (SiO₂), purple variety; trigonal crystal system

Amethyst crystal (Quartz (SiO₂), purple variety; trigonal crystal system) — mineral

Amethyst crystal

Quartz (SiO₂), purple variety; trigonal crystal system

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

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown hopper crystal

Quartz crystal cluster (likely smoky quartz) (Quartz, SiO₂; the brown-gray coloration may indicate smoky quartz, but the photo alone cannot confirm it.) — mineral

Quartz crystal cluster (likely smoky quartz)

Quartz, SiO₂; the brown-gray coloration may indicate smoky quartz, but the photo alone cannot confirm it.

Quartz crystal (likely milky or cloudy quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Quartz crystal (likely milky or cloudy quartz)

Quartz, silicon dioxide (SiO₂)

Clear quartz crystal (likely vein quartz) (Quartz, silicon dioxide (SiO₂), most likely colorless macrocrystalline quartz) — mineral

Clear quartz crystal (likely vein quartz)

Quartz, silicon dioxide (SiO₂), most likely colorless macrocrystalline quartz

Aquamarine (Beryl) (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Aquamarine (Beryl)

Beryllium aluminum silicate (Be3Al2Si6O18)

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

Milky quartz pebble

Quartz, silicon dioxide (SiO₂)

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

Fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Bismuth crystal (Bismuth (Bi), artificially crystallized) — mineral

Bismuth crystal

Bismuth (Bi), artificially crystallized

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)

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

Clear Quartz / Rock Crystal

Silicon Dioxide (SiO2)

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

Smoky quartz crystal fragment

Quartz (SiO₂), smoky variety

Amethyst (large crystal point) (Quartz, SiO₂; purple coloration from trace iron and irradiation) — mineral

Amethyst (large crystal point)

Quartz, SiO₂; purple coloration from trace iron and irradiation

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

Amethyst quartz crystal cluster

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

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

Clear quartz crystal fragment

Quartz, silicon dioxide (SiO₂)

Amber (Succinite (Resinite)) — Organic Crystal (Mineraloid)

Amber

Succinite (Resinite)

Organic Crystal (Mineraloid)

Green Aura Quartz (Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating) — mineral

Green Aura Quartz

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating

Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities