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

Clear Quartz / Rock Crystal

Silicon Dioxide (SiO2)

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

Clear quartz crystal (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

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

Clear quartz crystal fragment

Quartz, silicon dioxide (SiO₂)

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)

Quartz geode slice (Microcrystalline quartz (SiO₂), chiefly chalcedony with drusy quartz crystals) — mineral

Quartz geode slice

Microcrystalline quartz (SiO₂), chiefly chalcedony with drusy quartz crystals

Smoky quartz crystal cluster (Quartz, silicon dioxide (SiO₂), likely smoky variety with possible feldspar or matrix inclusions) — mineral

Smoky quartz crystal cluster

Quartz, silicon dioxide (SiO₂), likely smoky variety with possible feldspar or matrix inclusions

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

Likely quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Smoky quartz crystal cluster (Quartz, silicon dioxide (SiO₂), likely smoky quartz with milky quartz matrix) — mineral

Smoky quartz crystal cluster

Quartz, silicon dioxide (SiO₂), likely smoky quartz with milky quartz matrix

Quartz crystal fragment (likely milky/inclusion-rich quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Quartz crystal fragment (likely milky/inclusion-rich quartz)

Quartz, silicon dioxide (SiO₂)

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

Emerald in Matrix

Beryl (Be3Al2Si6O18) containing Chromium/Vanadium impurities

Aquamarine (Beryl (Be3Al2Si6O18)) — gemstone

Aquamarine

Beryl (Be3Al2Si6O18)

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

Quartz / Rock Crystal

Silicon Dioxide (SiO2)

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

Tumbled quartz crystal

Quartz (silicon dioxide, SiO₂)

Amethyst quartz crystal (Quartz, SiO₂, purple variety (amethyst)) — mineral

Amethyst quartz crystal

Quartz, SiO₂, purple variety (amethyst)

Agate Geode (Banded Chalcedony (Silicon Dioxide, SiO2) with Quartz crystals) — mineral

Agate Geode

Banded Chalcedony (Silicon Dioxide, SiO2) with Quartz crystals

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

Clear quartz crystal (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

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

Likely quartz crystal fragment

Quartz (silicon dioxide, SiO₂)

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

Rock crystal quartz fragment

Quartz (silicon dioxide, SiO₂)

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

Bismuth crystal

Bismuth (Bi), artificially crystallized

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

Clear quartz crystal sphere

Quartz (silicon dioxide, SiO₂)

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

Milky quartz crystal

Quartz (silicon dioxide, SiO₂)

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

Clear quartz fragment (rock crystal)

Quartz, silicon dioxide (SiO₂)

Phantom Quartz (Chlorite Inclusion) (Silicon Dioxide (SiO2) with Chlorite (Mg,Fe,Al)6(Si,Al)4O10(OH)8) — mineral

Phantom Quartz (Chlorite Inclusion)

Silicon Dioxide (SiO2) with Chlorite (Mg,Fe,Al)6(Si,Al)4O10(OH)8

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

Amber

Succinite (Resinite)

Organic Crystal (Mineraloid)

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

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown hopper crystal

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

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Limestone with Calcite Crystals (Sedimentary Rock containing Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Calcite Crystals

Sedimentary Rock containing Calcium Carbonate (CaCO3)

Amethyst crystal fragment (Quartz, SiO₂; purple variety colored by trace iron and irradiation) — mineral

Amethyst crystal fragment

Quartz, SiO₂; purple variety colored by trace iron and irradiation

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

Smoky quartz crystal

Quartz, silicon dioxide (SiO₂), likely smoky variety

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

Milky quartz crystal

Quartz, silicon dioxide (SiO₂)

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

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

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

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

Clear Quartz Crystal on Matrix

SiO2 (Silicon Dioxide)

Rutilated quartz crystal (Quartz, silicon dioxide (SiO₂), containing rutile inclusions (TiO₂)) — mineral

Rutilated quartz crystal

Quartz, silicon dioxide (SiO₂), containing rutile inclusions (TiO₂)

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

Green fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Aquamarine (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Aquamarine (Tumbled) (Beryl (Be3Al2Si6O18)) — gemstone

Aquamarine (Tumbled)

Beryl (Be3Al2Si6O18)