Rock Identifier

Category

Mineral, Specifically A Cryptocrystalline Quartz Variety

Browse mineral, specifically a cryptocrystalline quartz variety specimens identified by the Rock Identifier community.

Blue Quartz (Aventurine) (Silicon Dioxide (SiO2) with Crocidolite or Magnesio-riebeckite inclusions) — metamorphic

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with Crocidolite or Magnesio-riebeckite inclusions

Porphyry (Porphyritic Andesite/Dacite) — igneous

Porphyry

Porphyritic Andesite/Dacite

Crushed Granite Gravel (Granite (Mainly Quartz, Feldspar, and Mica)) — igneous

Crushed Granite Gravel

Granite (Mainly Quartz, Feldspar, and Mica)

Carnelian (Orange Chalcedony) (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Carnelian (Orange Chalcedony)

Silicon Dioxide (SiO2) - variety of Chalcedony

Rhodochrosite (Beads) and Citrine (Pendant) (Rhodochrosite (MnCO3) and Quartz variety Citrine (SiO2)) — mineral

Rhodochrosite (Beads) and Citrine (Pendant)

Rhodochrosite (MnCO3) and Quartz variety Citrine (SiO2)

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

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate') (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate')

Silicon Dioxide (SiO2) with artificial pigment

Quartz (Milky/Common) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Mixed Quartz and River Pebbles (Stone Collection) (Mixed assortment containing mainly Silicon Dioxide (SiO2)) — igneous, sedimentary, metamorphic, and mineral

Mixed Quartz and River Pebbles (Stone Collection)

Mixed assortment containing mainly Silicon Dioxide (SiO2)

igneous, sedimentary, metamorphic, and mineral

Yellow Jasper (Silicon dioxide (SiO2)) — sedimentary

Yellow Jasper

Silicon dioxide (SiO2)

Granite (Granite) — Igneous

Granite

Granite

Fuchsite (Chromium-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]) — mineral

Fuchsite

Chromium-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]

Chert (variant Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variant Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Yellow Aventurine (Yellow Quartz) (Silicon Dioxide (SiO2) with inclusions of Muscovite or Mica) — Mineral (variant of Quartz)

Yellow Aventurine (Yellow Quartz)

Silicon Dioxide (SiO2) with inclusions of Muscovite or Mica

Mineral (variant of Quartz)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

River Cobble (likely Sandstone or Siltstone type) (Sandstone or Siltstone (common rock types that form river cobbles)) — Sedimentary Rock (specifically a clastic sedimentary rock formed into a cobble)

River Cobble (likely Sandstone or Siltstone type)

Sandstone or Siltstone (common rock types that form river cobbles)

Sedimentary Rock (specifically a clastic sedimentary rock formed into a cobble)

Quartz (likely Milky Quartz or Chalcedony) (Quartz (SiO2 - Silicon Dioxide)) — Mineral

Quartz (likely Milky Quartz or Chalcedony)

Quartz (SiO2 - Silicon Dioxide)

Chert (Septarian Concretion/Nodule) (Microcrystalline silica (SiO2) with carbonate mineral veining) — sedimentary

Chert (Septarian Concretion/Nodule)

Microcrystalline silica (SiO2) with carbonate mineral veining

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide with trace inclusions (SiO2)) — mineral

Rose Quartz

Silicon Dioxide with trace inclusions (SiO2)

Amethyst (SiO2 (Silicon Dioxide) - a variety of Quartz) — Mineral

Amethyst

SiO2 (Silicon Dioxide) - a variety of Quartz

Orange Calcite (Calcite (Calcium Carbonate, CaCO3)) — Mineral

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Carnelian (Carnelian (a variety of Chalcedony), SiO2 (Silicon Dioxide)) — mineral

Carnelian

Carnelian (a variety of Chalcedony), SiO2 (Silicon Dioxide)

Chert Pebble with Quartz Veins (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble with Quartz Veins

Microcrystalline Quartz (SiO2)

Picture Jasper (Silicon Dioxide (SiO2) with iron oxide and mineral impurities) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and mineral impurities

Tumbled Green Jasper (Silicon Dioxide (SiO2) with mineral inclusions) — sedimentary

Tumbled Green Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Chert (Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Chert (variations include Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variations include Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Granite (Granite (Mainly Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)) — igneous

Granite

Granite (Mainly Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)

Green Quartzite (Aventurine variety) (Silicon Dioxide (SiO2) with inclusions of Fuchsite) — metamorphic

Green Quartzite (Aventurine variety)

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

Quartz (Quartz (Silicon Dioxide - SiO2)) — Mineral

Quartz

Quartz (Silicon Dioxide - SiO2)

Green Aventurine (Quartz (Silicon Dioxide) with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Green Aventurine

Quartz (Silicon Dioxide) with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Ruby (Corundum) (Corundum (Aluminum Oxide with Chromium), Al2O3:Cr) — mineral

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Quartz / Quartzite (Quartz (Silicon Dioxide, SiO2)) — metamorphic

Quartz / Quartzite

Quartz (Silicon Dioxide, SiO2)

Chert (with Iron Staining) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (with Iron Staining)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz (Milky or Common variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Common variety)

Silicon Dioxide (SiO2)

Dyed Dragon Vein Agate (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

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

Milky Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Quartz (Milky/Crystalline variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Crystalline variety)

Silicon Dioxide (SiO2)

Granite (Granite (Phaneritic Acidic Igneous Rock)) — igneous

Granite

Granite (Phaneritic Acidic Igneous Rock)