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

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

Moonstone (with Tourmaline/Mica)

Orthoclase/Albite Feldspar (KAlSi3O8 / NaAlSi3O8)

Dyed Tumbled Quartz (Silicon Dioxide (SiO2)) — mineral

Dyed Tumbled Quartz

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2) with ferric iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with ferric iron impurities

Rose Quartz (Silicon Dioxide (SiO2)) — gemstone

Rose Quartz

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Citrine Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Quartz (Citrine variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Citrine variety)

Silicon Dioxide (SiO2)

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Assorted Tumbled Gemstones (Mixed oxides and silicates (including Quartz, Chalcedony, and Feldspar variants)) — mineral

Assorted Tumbled Gemstones

Mixed oxides and silicates (including Quartz, Chalcedony, and Feldspar variants)

Yellow Quartz (Citrine Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

Quartz (Yellow/Citrine variety) (Crystalline Silicon Dioxide (SiO2)) — mineral

Quartz (Yellow/Citrine variety)

Crystalline Silicon Dioxide (SiO2)

Shiva Lingam (Cryptocrystalline Quartz (Jasproid/Chalcedony mix)) — sedimentary

Shiva Lingam

Cryptocrystalline Quartz (Jasproid/Chalcedony mix)

Blue Goldstone (Aventurine Glass) — Man-made mineral simulant (Glass)

Blue Goldstone

Aventurine Glass

Man-made mineral simulant (Glass)

Yellow Jasper (Jasper (SiO2) with iron hydroxide inclusions) — sedimentary

Yellow Jasper

Jasper (SiO2) with iron hydroxide inclusions

Ametrine (Ametrine (SiO2 - Silicon Dioxide with varied iron impurities)) — mineral

Ametrine

Ametrine (SiO2 - Silicon Dioxide with varied iron impurities)

Goldstone (Aventurine glass (Synthetic glass with copper inclusions)) — mineraloid / man-made glass

Goldstone

Aventurine glass (Synthetic glass with copper inclusions)

mineraloid / man-made glass

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

Rose Quartz

Quartz (Silicon Dioxide, SiO2)

Selenite (variety of Gypsum) (Calcium sulfate dihydrate (CaSO4·2H2O)) — mineral

Selenite (variety of Gypsum)

Calcium sulfate dihydrate (CaSO4·2H2O)

Porphyritic Basalt (Porphyritic Basalt (with plagioclase phenocrysts)) — igneous

Porphyritic Basalt

Porphyritic Basalt (with plagioclase phenocrysts)

Druzy Quartz (Crystalline Silicon Dioxide (SiO2)) — mineral

Druzy Quartz

Crystalline Silicon Dioxide (SiO2)

Celestine (or Celestite) (Strontium sulfate (SrSO4)) — mineral

Celestine (or Celestite)

Strontium sulfate (SrSO4)

Ametrine (Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)) — mineral

Ametrine

Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)

Scoria (Vesicular Basaltic Glass (comprised primarily of volcanic glass/silica with plagioclase, pyroxene, and olivine crystals)) — igneous

Scoria

Vesicular Basaltic Glass (comprised primarily of volcanic glass/silica with plagioclase, pyroxene, and olivine crystals)

Granitic Pegmatite (with Smoky Quartz and Mica) (Granitic Pegmatite (composed of SiO2, KAl2(AlSi3O10)(OH)2, and (K,Na)(AlSi3O8))) — igneous

Granitic Pegmatite (with Smoky Quartz and Mica)

Granitic Pegmatite (composed of SiO2, KAl2(AlSi3O10)(OH)2, and (K,Na)(AlSi3O8))

Chinese Writing Stone (Porphyritic Basalt or Andesite with Feldspar phenocrysts (likely Orthoclase or Plagioclase)) — igneous

Chinese Writing Stone

Porphyritic Basalt or Andesite with Feldspar phenocrysts (likely Orthoclase or Plagioclase)

Chalcedony with Druzy Quartz (Silicon Dioxide (SiO2)) — mineral

Chalcedony with Druzy Quartz

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

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

Amethyst Quartz Druse

Silicon Dioxide (SiO2) with iron impurities

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

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Amethyst (Amethyst (Varietal of Quartz), SiO2 with traces of Iron (Fe3+)) — mineral

Amethyst

Amethyst (Varietal of Quartz), SiO2 with traces of Iron (Fe3+)

Green Tourmaline (Verdelite (Silicate mineral); Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) — mineral

Green Tourmaline

Verdelite (Silicate mineral); Na(Li,Al)3Al6(BO3)3Si6O18(OH)4

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

Raw Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

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

Clear/White Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartzite with Quartz Geode / Vug (Crystalline Silicon Dioxide (SiO2) in Metamorphic Host) — metamorphic

Quartzite with Quartz Geode / Vug

Crystalline Silicon Dioxide (SiO2) in Metamorphic Host

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Porphyritic Andesite or Dacite (tumbled pebble) (Porphyritic Igneous Rock (likely Andesite or Dacite)) — Igneous

Porphyritic Andesite or Dacite (tumbled pebble)

Porphyritic Igneous Rock (likely Andesite or Dacite)

Ferruginous Quartz (Silicon Dioxide (SiO2) with Hematite/Limonite impurities) — mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Desert Rose Selenite (Gypsum) (Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O) — mineral

Desert Rose Selenite (Gypsum)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

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

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

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