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

Rose quartz (tumbled) (Quartz, SiO₂; pink variety commonly called rose quartz) — mineral

Rose quartz (tumbled)

Quartz, SiO₂; pink variety commonly called rose quartz

Black Tourmaline (Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)) — mineral

Black Tourmaline

Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)

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

Clear quartz crystal (likely quartz point/fragment)

Quartz, silicon dioxide (SiO₂)

Likely calcite crystal fragment (Calcite (CaCO₃)) — mineral

Likely calcite crystal fragment

Calcite (CaCO₃)

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

Milky quartz crystal fragment

Quartz, silicon dioxide (SiO₂)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal) (Crystalline Silicon Dioxide (SiO2)) — gemstone

Clear Quartz (Rock Crystal)

Crystalline Silicon Dioxide (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky quartz (likely quartz-rich vein fragment) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (likely quartz-rich vein fragment)

Quartz, silicon dioxide (SiO₂)

Amethyst (Tumbled) (Quartz (SiO2) with iron impurities) — mineral

Amethyst (Tumbled)

Quartz (SiO2) with iron impurities

Opalite (Synthetic glass (SiO2 + impurities)) — mineral

Opalite

Synthetic glass (SiO2 + impurities)

Blue Dyed Agate (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Blue Dyed Agate

Chalcedony (Silicon Dioxide, SiO2)

Prasiolite (Green Quartz) / Sea Glass Amalgam (SiO2 (Silicon Dioxide)) — mineral

Prasiolite (Green Quartz) / Sea Glass Amalgam

SiO2 (Silicon Dioxide)

Moonstone (with Tourmaline/Mica) (Orthoclase/Albite Feldspar (KAlSi3O8 / NaAlSi3O8)) — mineral

Moonstone (with Tourmaline/Mica)

Orthoclase/Albite Feldspar (KAlSi3O8 / NaAlSi3O8)

Dyed Blue Agate (Chalcedony (Silicon Dioxide / SiO2)) — mineral

Dyed Blue Agate

Chalcedony (Silicon Dioxide / SiO2)

Moss Agate Sphere (Silicon Dioxide (SiO2) with inclusions) — mineral

Moss Agate Sphere

Silicon Dioxide (SiO2) with inclusions

Opalite (Synthetic Glass (Simulated Opal)) — gemstone

Opalite

Synthetic Glass (Simulated Opal)

Aura Quartz (Silicon Dioxide (SiO2) with Titanium/Metal vapor coating) — mineral

Aura Quartz

Silicon Dioxide (SiO2) with Titanium/Metal vapor coating

Dragon Vein Agate (Dyed/Fractured Quartz) (Silicon dioxide (SiO2)) — gemstone

Dragon Vein Agate (Dyed/Fractured Quartz)

Silicon dioxide (SiO2)

Amethyst (Quartz (SiO2)) — gemstone

Amethyst

Quartz (SiO2)

Heart-shaped Quartz (Silicon Dioxide (SiO2)) — mineral

Heart-shaped Quartz

Silicon Dioxide (SiO2)

Titanium Quartz (Aura Quartz) (Silicon Dioxide (SiO2) treated with Titanium) — mineral

Titanium Quartz (Aura Quartz)

Silicon Dioxide (SiO2) treated with Titanium

Banded Agate (Tumbled) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Banded Agate (Tumbled)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Green Quartz / Prasiolite (Silicon Dioxide (SiO2)) — mineral

Green Quartz / Prasiolite

Silicon Dioxide (SiO2)

Amethyst (Carved Wolf Mini Figurine) (Silicon Dioxide (SiO2)) — gemstone

Amethyst (Carved Wolf Mini Figurine)

Silicon Dioxide (SiO2)

Aura Quartz Geode (Angel Aura Quartz) (Silicon Dioxide (SiO2) bonded with precious metals) — mineral

Aura Quartz Geode (Angel Aura Quartz)

Silicon Dioxide (SiO2) bonded with precious metals

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Tumbled Agate (Silicon Dioxide (Chalcedony variety), SiO2) — mineral

Tumbled Agate

Silicon Dioxide (Chalcedony variety), SiO2

White Quartz (Carved Star) (Silicon Dioxide (SiO2)) — mineral

White Quartz (Carved Star)

Silicon Dioxide (SiO2)

Yellow Calcite (Polished Pebble) (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite (Polished Pebble)

Calcium Carbonate (CaCO3)

Amethyst Crescent (Quartz (Silicon Dioxide, SiO2)) — gemstone

Amethyst Crescent

Quartz (Silicon Dioxide, SiO2)

Tumbled Rose Quartz (Quartz (Silicon Dioxide, SiO2 with trace amounts of titanium, iron, or manganese)) — mineral

Tumbled Rose Quartz

Quartz (Silicon Dioxide, SiO2 with trace amounts of titanium, iron, or manganese)

Amethyst (Silicon Dioxide (Quartz variety), SiO2) — mineral

Amethyst

Silicon Dioxide (Quartz variety), SiO2

Quartz (Rose Quartz or Jasper variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Rose Quartz or Jasper variety)

Silicon Dioxide (SiO2)

Amethyst (Quartz (SiO2)) — gemstone

Amethyst

Quartz (SiO2)

Blue Quartz (Silicon Dioxide (SiO2) with inclusions) — mineral

Blue Quartz

Silicon Dioxide (SiO2) with inclusions

Blue Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Blue Calcite

Calcite (Calcium Carbonate, CaCO3)

Amethyst (Quartz (Silicon Dioxide, SiO2)) — gemstone

Amethyst

Quartz (Silicon Dioxide, SiO2)

Yellow Aventurine (Quartz (Silicon Dioxide, SiO2) with inclusions) — mineral

Yellow Aventurine

Quartz (Silicon Dioxide, SiO2) with inclusions

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)