Pink Granite
Granite (Phaneritic Quartz-Feldspar intrusive rock)
igneous
Category
Mineral (Specifically A Cryptocrystalline Variety Of Quartz)
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
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Jasper
Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz (Citrine)
Silicon Dioxide (SiO2)
mineral
Tumbled Agate and Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
mineral
Yellow Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
Unakite
Epidote-Feldspar rock (specifically, a variety of granite)
Metamorphic rock
Banded Flint (Chert)
Silicon Dioxide (SiO2)
sedimentary
Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions
mineral
Ocean Jasper
Silicon Dioxide (SiO2) with various inclusions
Mineral (Variety of Quartz)
Chalcedony (specifically Agate or Moonstone-like Quartz)
Silicon Dioxide (SiO2)
mineral
Blue chalcedony (likely dyed or coated)
Microcrystalline quartz, SiO₂ (chalcedony)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz
sedimentary
Moonstone
Orthoclase (KAlSi3O8), specifically the variety showing adularescence
mineral
Tumbled chalcedony (likely pale agate or quartz)
Chalcedony, microcrystalline SiO₂
mineral
Flint
Microcrystalline quartz (SiO2)
sedimentary
Tumbled milky quartz
Quartz (SiO₂), cryptocrystalline-to-massive variety
mineral
Carnelian
Carnelian (Silicon Dioxide - SiO2)
mineral
Orange carnelian (possibly dyed agate) pendant
Cryptocrystalline quartz (chalcedony), SiO₂
gemstone
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Blue Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Agate geode fragment
Banded chalcedony (microcrystalline SiO₂), lining a geode cavity
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2 with iron oxide inclusions)
sedimentary
Blue Chalcedony and Picture Jasper Beads
Blue Chalcedony (SiO2), Picture Jasper (SiO2)
Mineral
Polished carnelian agate
Microcrystalline quartz (SiO₂), chalcedony variety with iron-oxide coloration
gemstone
Milky quartz pebble
Quartz (SiO₂), cryptocrystalline to massive variety
mineral
Chert (or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chalcedony (Agate/Chert)
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled yellow chalcedony (probable)
Chalcedony, microcrystalline quartz (SiO₂), possibly iron-stained jasper
mineral
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically Novaculite or Porcelainite)
Microcrystalline to Cryptocrystalline Quartz (SiO2)
sedimentary
Agate (Chalcedony)
Cryptocrystalline Quartz (SiO2)
mineral
Polished orbicular granite (likely larvikite or rapakivi-type granite)
Granite; primarily quartz, potassium feldspar, plagioclase, and biotite/hornblende
igneous
Turquoise (Rough Specimens)
Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
mineral
Rough Green Beryl (Emerald variety)
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Carnelian
Carnelian (Silicon Dioxide: SiO2 with Iron Oxide impurities)
mineral
Yellow Topaz (Imperial or Precious Topaz)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
mineral
Chert (specifically Brown Chert or Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Cryptocrystalline Quartz (SiO2)
sedimentary
Banded Agate (likely Carnelian Agate or Sardonyx)
Agate is a common name for a microcrystalline variety of Quartz (SiO₂), specifically a form of Chalcedony.
Sedimentary Rock (technically a variety of Chalcedony)