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

Synthetic Sapphire and Ion-X Glass (Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass) — mineral

Synthetic Sapphire and Ion-X Glass

Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass

Agate Geode (Silicon Dioxide (SiO2) - Chalcedony / Quartz Variety) — Mineral

Agate Geode

Silicon Dioxide (SiO2) - Chalcedony / Quartz Variety

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

Amethyst quartz crystal cluster

Quartz, silicon dioxide (SiO₂), purple variety amethyst

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

Rose Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz crystal cluster (Quartz, silicon dioxide (SiO₂), likely milky quartz with drusy crystals) — mineral

Quartz crystal cluster

Quartz, silicon dioxide (SiO₂), likely milky quartz with drusy crystals

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Aquamarine (Beryl (Be3Al2Si6O18 with trace Fe2+)) — Mineral

Aquamarine

Beryl (Be3Al2Si6O18 with trace Fe2+)

Aquamarine (Beryl) (Beryllium Aluminum Silicate - Be3Al2Si6O18) — gemstone

Aquamarine (Beryl)

Beryllium Aluminum Silicate - Be3Al2Si6O18

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

Emerald in Matrix (Quartz/Calcite)

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Granite (phaneritic background) with Limestone/Calcite carving (Felsic Igneous Plutonic Rock (background) / Calcium Carbonate (CaCO3) (carving)) — igneous and sedimentary

Granite (phaneritic background) with Limestone/Calcite carving

Felsic Igneous Plutonic Rock (background) / Calcium Carbonate (CaCO3) (carving)

igneous and sedimentary

Emerald in Matrix (Emerald (Beryllium Aluminum Silicate), Be3Al2(SiO3)6) — mineral

Emerald in Matrix

Emerald (Beryllium Aluminum Silicate), Be3Al2(SiO3)6

Herkimer Diamond (Quartz (Silicon Dioxide, SiO2)) — mineral

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Quartz crystal pendant

Quartz (silicon dioxide, SiO₂), likely rock crystal or milky quartz

Amethyst (Rough Crystal) (Silicon Dioxide (SiO2)) — mineral

Amethyst (Rough Crystal)

Silicon Dioxide (SiO2)

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

Amethyst Quartz Crystal

Silicon Dioxide (SiO2) with iron impurities

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

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

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

Quartz crystal fragment

Quartz (silicon dioxide, SiO₂)

Dyed Quartz Crystals (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Quartz Crystals

Silicon Dioxide (SiO2) with artificial pigment

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

Amethyst Crystal Point

SiO2 (Silicon Dioxide with iron impurities)

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

Amethyst (Rough Crystal)

Silicon Dioxide (SiO2) with iron impurities

Pink quartz crystal (likely rose quartz) (Quartz, silicon dioxide (SiO₂), possibly rose quartz) — mineral

Pink quartz crystal (likely rose quartz)

Quartz, silicon dioxide (SiO₂), possibly rose quartz

Likely pyrite-bearing rock (Pyrite (FeS₂), possibly as crystals in a dark host rock) — mineral

Likely pyrite-bearing rock

Pyrite (FeS₂), possibly as crystals in a dark host rock

Orange druzy agate geode fragment (Microcrystalline quartz (SiO₂), with chalcedony and druzy quartz crystals) — mineral

Orange druzy agate geode fragment

Microcrystalline quartz (SiO₂), with chalcedony and druzy quartz crystals

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Tumbled Rose Quartz with Matrix (Rose Quartz - SiO2 (Silicon Dioxide)) — mineral

Tumbled Rose Quartz with Matrix

Rose Quartz - SiO2 (Silicon Dioxide)

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

Rock Crystal Quartz

Silicon Dioxide (SiO2)

Chakra Crystal Bracelet (Mixed Mineral Assortment) — gemstone

Chakra Crystal Bracelet

Mixed Mineral Assortment

Quartz (clear quartz/crystal quartz) (Quartz, silicon dioxide (SiO₂), trigonal crystal system) — mineral

Quartz (clear quartz/crystal quartz)

Quartz, silicon dioxide (SiO₂), trigonal crystal system

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Aquamarine (Beryl (Be₃Al₂Si₆O₁₈)) — mineral

Aquamarine

Beryl (Be₃Al₂Si₆O₁₈)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz geode (chalcedony-lined geode) (Quartz, SiO₂; commonly botryoidal chalcedony with drusy quartz crystals) — mineral

Quartz geode (chalcedony-lined geode)

Quartz, SiO₂; commonly botryoidal chalcedony with drusy quartz crystals

Amethyst crystal cluster (Amethyst, purple variety of quartz (SiO₂)) — mineral

Amethyst crystal cluster

Amethyst, purple variety of quartz (SiO₂)

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

Clear Quartz (Faceted Crystal)

Silicon Dioxide (SiO2)

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

Amethyst cluster

Amethyst, purple variety of quartz (SiO₂); trigonal crystal system

Coquina with Calcite Crystals (Calcareous Bioclastic Grainstone (CaCO3)) — sedimentary

Coquina with Calcite Crystals

Calcareous Bioclastic Grainstone (CaCO3)

Aquamarine (Beryl (Be₃Al₂Si‑₆O₁₈)) — mineral

Aquamarine

Beryl (Be₃Al₂Si‑₆O₁₈)

Druzy Quartz Geode (likely Smokey Quartz variety) (Silicon Dioxide (SiO2) - specifically a geode formation lined with druzy quartz crystals, with a likely brownish hue indicating smokey quartz.) — Mineral structure/Rock

Druzy Quartz Geode (likely Smokey Quartz variety)

Silicon Dioxide (SiO2) - specifically a geode formation lined with druzy quartz crystals, with a likely brownish hue indicating smokey quartz.

Mineral structure/Rock

Amethyst (rough crystal cluster) (Quartz, SiO₂; purple color from trace iron and natural irradiation) — mineral

Amethyst (rough crystal cluster)

Quartz, SiO₂; purple color from trace iron and natural irradiation

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation) (Quartz, silicon dioxide (SiO₂)) — mineral

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)

Quartz, silicon dioxide (SiO₂)

Pyrite (“fool’s gold”) (Pyrite, iron disulfide (FeS₂), commonly forming cubic crystals) — mineral

Pyrite (“fool’s gold”)

Pyrite, iron disulfide (FeS₂), commonly forming cubic crystals