Rock Identifier

Category

Crystal

Browse crystal specimens identified by the Rock Identifier community.

Native Sulfur (Sulfur (S)) — mineral

Native Sulfur

Sulfur (S)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Smoky Quartz in Matrix (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz in Matrix

Silicon Dioxide (SiO2)

Amazonite (Amazonite (KAlSi3O8)) — mineral

Amazonite

Amazonite (KAlSi3O8)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Citrine Quartz

SiO2 (Silicon Dioxide with Iron impurities)

Pyrite in Shale (Iron Disulfide (FeS2)) — mineral

Pyrite in Shale

Iron Disulfide (FeS2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Epidote (Epidote - Ca2(Al,Fe)3(SiO4)3(OH)) — metamorphic

Epidote

Epidote - Ca2(Al,Fe)3(SiO4)3(OH)

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

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

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

Amethyst

Crystalline Quartz (SiO2 with iron impurities)

Snowflake Obsidian (Spherulitic Volcanic Glass (primarily SiO2 with Cristobalite inclusions)) — igneous

Snowflake Obsidian

Spherulitic Volcanic Glass (primarily SiO2 with Cristobalite inclusions)

Dalmatian Stone (commonly Dyed) (Dalmatian Jasper (Peralkaline igneous rock)) — igneous

Dalmatian Stone (commonly Dyed)

Dalmatian Jasper (Peralkaline igneous rock)

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

Milky Quartz with inclusions

Quartz (Silicon Dioxide, SiO2)

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

Fuchsite

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

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

Quartz (Milky Variant)

Silicon Dioxide (SiO2)

Honey Calcite (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite

Calcium Carbonate (CaCO3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

White Quartz Pebbles (Quartz (Silicon Dioxide, SiO2)) — Mineral

White Quartz Pebbles

Quartz (Silicon Dioxide, SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Graphite (Graphite (Native Carbon, C)) — Mineral

Graphite

Graphite (Native Carbon, C)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (likely Herkimer Diamond style) (Silicon Dioxide (SiO2)) — mineral

Quartz (likely Herkimer Diamond style)

Silicon Dioxide (SiO2)

Prase quartz with actinolite inclusions (Silicon dioxide (SiO2) with Calcium Magnesium Iron Silicate Hydroxide inclusions) — mineral

Prase quartz with actinolite inclusions

Silicon dioxide (SiO2) with Calcium Magnesium Iron Silicate Hydroxide inclusions

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

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Black Kyanite (Kyanite (Al2SiO5) with carbonaceous inclusions) — mineral

Black Kyanite

Kyanite (Al2SiO5) with carbonaceous inclusions

White Quartz (Carved or Tumbled) (Silicon Dioxide (SiO2)) — mineral

White Quartz (Carved or Tumbled)

Silicon Dioxide (SiO2)

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

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Mica Schist with Garnet inclusions (Mica Schist (primarily Muscovite and Biotite - KAl2(AlSi3O10)(OH)2)) — metamorphic

Mica Schist with Garnet inclusions

Mica Schist (primarily Muscovite and Biotite - KAl2(AlSi3O10)(OH)2)

Quartz with Mica (Pegmatite) (Quartz (SiO2) and Muscovite (KAl2(AlSi3O10)(OH)2)) — igneous

Quartz with Mica (Pegmatite)

Quartz (SiO2) and Muscovite (KAl2(AlSi3O10)(OH)2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Sulfur (Sulfur (S8)) — mineral

Sulfur

Sulfur (S8)

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz with Matrix

Quartz (Silicon Dioxide, SiO2)

Magnetite / Iron Ore (Magnetite (Fe3O4)) — mineral

Magnetite / Iron Ore

Magnetite (Fe3O4)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Amethyst (Variety of Quartz)

Silicon Dioxide (SiO2) with iron impurities

Smoky Quartz (Smoky Quartz (SiO2)) — mineral

Smoky Quartz

Smoky Quartz (SiO2)