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

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Obsidian (Volcanic Glass (70-75% SiO2)) — igneous

Obsidian

Volcanic Glass (70-75% SiO2)

Milky Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Geode (Clear Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz Geode

Clear Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Brecciated Jasper (Silicon Dioxide (SiO2) with Hematite and Quartz inclusions) — sedimentary

Brecciated Jasper

Silicon Dioxide (SiO2) with Hematite and Quartz inclusions

Spinifex Textured Komatiite (Ultramafic Komatiite) — igneous

Spinifex Textured Komatiite

Ultramafic Komatiite

Quartz (Grain) (Silicon Dioxide (SiO2)) — mineral

Quartz (Grain)

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

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

Banded Amethyst (Chevron Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Amber (Succinate (Fossilized Tree Resin)) — mineraloid

Amber

Succinate (Fossilized Tree Resin)

Blue Chalcedony (Agate) (Cryptocrystalline Quartz (SiO2)) — mineral

Blue Chalcedony (Agate)

Cryptocrystalline Quartz (SiO2)

Blue Spinel on Marble with Phlogopite (MgAl2O4 (Spinel) in CaCO3 (Calcite/Marble) matrix) — metamorphic

Blue Spinel on Marble with Phlogopite

MgAl2O4 (Spinel) in CaCO3 (Calcite/Marble) matrix

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

Clear Calcite

Calcite (Calcium Carbonate, CaCO3)

Diamond (specifically Blue Diamond color appearance) (Carbon (C) with trace Boron) — mineral

Diamond (specifically Blue Diamond color appearance)

Carbon (C) with trace Boron

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite Geode (Iron Disulfide (FeS2)) — mineral

Pyrite Geode

Iron Disulfide (FeS2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Fuchsite (Cr-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Fuchsite

Cr-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

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

Rose Quartz

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

Zoisite with Ruby (Anyolite) (Anyolite (Calcium aluminium silicate hydroxide with Corundum)) — metamorphic

Zoisite with Ruby (Anyolite)

Anyolite (Calcium aluminium silicate hydroxide with Corundum)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Rough Diamond (Diamond (Native Carbon, C)) — mineral

Rough Diamond

Diamond (Native Carbon, C)

Quartz Druzy (Geode Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy (Geode Fragment)

Silicon Dioxide (SiO2)

Black Obsidian (Amorphous volcanic glass (SiO2)) — igneous

Black Obsidian

Amorphous volcanic glass (SiO2)

Granite (Phaneritic Felsic Intrusive Rock (Granite)) — Igneous

Granite

Phaneritic Felsic Intrusive Rock (Granite)

Quartz with Chalcopyrite and Pyrite (Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)) — mineral

Quartz with Chalcopyrite and Pyrite

Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)

Quartz with Iron Staining (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2) with iron oxide impurities

Green Fluorite (Fluorite (Calcium Fluoride) - CaF2) — mineral

Green Fluorite

Fluorite (Calcium Fluoride) - CaF2

Porphyritic Basalt with K-Feldspar Phenocryst (Porphyritic Basic Igneous Rock (with Potassium Feldspar)) — igneous

Porphyritic Basalt with K-Feldspar Phenocryst

Porphyritic Basic Igneous Rock (with Potassium Feldspar)

Pink Tourmaline (Rubellite) in Lepidolite (Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4) in Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — igneous

Pink Tourmaline (Rubellite) in Lepidolite

Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4) in Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Granite (Granite (Phaneritic Igneous Rock)) — igneous

Granite

Granite (Phaneritic Igneous Rock)

Granite (Phaneritic plutonic rock (Quartz, Feldspar, Mica)) — igneous

Granite

Phaneritic plutonic rock (Quartz, Feldspar, Mica)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Aragonite Star Cluster (Aragonite (Calcium Carbonate, CaCO3)) — mineral

Aragonite Star Cluster

Aragonite (Calcium Carbonate, CaCO3)