Rock Identifier

Category

Mineral (Specifically A Variety Of Chalcedony, Which Is A Cryptocrystalline Quartz)

Browse mineral (specifically a variety of chalcedony, which is a cryptocrystalline quartz) specimens identified by the Rock Identifier community.

Learn about Mineral (Specifically A Variety Of Chalcedony, Which Is A Cryptocrystalline Quartz) in the encyclopedia

Chalcedony

Blue Chalcedony

Blue Chalcedony

Black Onyx

Prase

Landscape Agate

Landscape Agate

Tube Agate

Carnelian

Feather Agate

Sweetwater Agate

Sweetwater Agate

Honey Agate

Cathedral Agate

Cathedral Agate

Cloud Agate

Flint (Microcrystalline Quartz (SiO2)) — sedimentary

Flint

Microcrystalline Quartz (SiO2)

Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony

Cryptocrystalline Quartz (SiO2)

Chalcedony (Agate/Carnelian variant) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Carnelian variant)

Silicon Dioxide (SiO2)

Banded Agate (specifically Lake Superior Agate type) (Silicon Dioxide (SiO2) - variety Chalcedony) — mineral

Banded Agate (specifically Lake Superior Agate type)

Silicon Dioxide (SiO2) - variety Chalcedony

Yellow Jasper (Silicon Dioxide (SiO2) with goethite or iron oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with goethite or iron oxide inclusions

Carnelian Agate (Silicon Dioxide (SiO2)) — mineral

Carnelian Agate

Silicon Dioxide (SiO2)

Plume Agate or Moss Agate (Agate (SiO2)) — mineral

Plume Agate or Moss Agate

Agate (SiO2)

Blue Dyed Agate Geode (Chalcedony (cryptocrystalline Quartz), SiO2) — mineral

Blue Dyed Agate Geode

Chalcedony (cryptocrystalline Quartz), SiO2

Blue Lace Agate (Silicon Dioxide (SiO2)) — mineral

Blue Lace Agate

Silicon Dioxide (SiO2)

Polished red jasper pebble (Jasper, microcrystalline quartz (SiO₂) colored mainly by hematite/goethite) — metamorphic

Polished red jasper pebble

Jasper, microcrystalline quartz (SiO₂) colored mainly by hematite/goethite

Tumbled chalcedony or quartz fragment (Microcrystalline quartz, SiO₂ (probable chalcedony)) — mineral

Tumbled chalcedony or quartz fragment

Microcrystalline quartz, SiO₂ (probable chalcedony)

Tumbled jasper or chalcedony (Microcrystalline quartz (SiO₂), probably iron-stained jasper/chalcedony) — mineral

Tumbled jasper or chalcedony

Microcrystalline quartz (SiO₂), probably iron-stained jasper/chalcedony

Dyed pink agate slice (Agate (microcrystalline quartz, SiO₂), commonly chalcedony with artificial dye) — mineral

Dyed pink agate slice

Agate (microcrystalline quartz, SiO₂), commonly chalcedony with artificial dye

Yellow Jasper (Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions

Quartz (Milky or Cloudy) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Cloudy)

Silicon Dioxide (SiO2)

Dragon Vein Agate (Chalcedony (cryptocrystalline silica, SiO2) variety Agate) — mineral

Dragon Vein Agate

Chalcedony (cryptocrystalline silica, SiO2) variety Agate

Agate (Chalcedony Variation) (Silicon Dioxide (SiO2)) — mineral

Agate (Chalcedony Variation)

Silicon Dioxide (SiO2)

Yellow Agate (Silicon Dioxide (Chalcedony variety), SiO2) — gemstone

Yellow Agate

Silicon Dioxide (Chalcedony variety), SiO2

Red jasper-like chalcedony pebble (Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper) — mineral

Red jasper-like chalcedony pebble

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper

Yellow Jasper (Silicon Dioxide (SiO2) with iron inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Dragon Blood Jasper (Epidote-rich Quartzite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Dragon Blood Jasper

Epidote-rich Quartzite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))

Tumbled carnelian/chalcedony (Cryptocrystalline quartz, SiO₂ (iron-bearing chalcedony)) — mineral

Tumbled carnelian/chalcedony

Cryptocrystalline quartz, SiO₂ (iron-bearing chalcedony)

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

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Crazy Lace Agate (Silicon dioxide (SiO2) - a variety of banded Chalcedony (cryptocrystalline quartz)) — mineral

Crazy Lace Agate

Silicon dioxide (SiO2) - a variety of banded Chalcedony (cryptocrystalline quartz)

Blue-dyed banded agate (Microcrystalline quartz (SiO₂), chalcedony variety) — mineral

Blue-dyed banded agate

Microcrystalline quartz (SiO₂), chalcedony variety

Tourmalinated Quartz (Silicon dioxide (SiO2) with inclusions of Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)) — mineral

Tourmalinated Quartz

Silicon dioxide (SiO2) with inclusions of Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)

Orange Quartz with Hematite inclusions (Quartz (SiO2) with Hematite (Fe2O3) inclusions) — Mineral

Orange Quartz with Hematite inclusions

Quartz (SiO2) with Hematite (Fe2O3) inclusions

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Agate (Slab) (Agate (Cryptocrystalline variety of Quartz, SiO2)) — Mineral

Agate (Slab)

Agate (Cryptocrystalline variety of Quartz, SiO2)

Tumbled jasper, likely picture or brecciated jasper (Microcrystalline quartz (SiO₂) with iron-oxide and other mineral impurities) — gemstone

Tumbled jasper, likely picture or brecciated jasper

Microcrystalline quartz (SiO₂) with iron-oxide and other mineral impurities

Geode (Quartz / Chalcedony nodule) — sedimentary

Geode

Quartz / Chalcedony nodule

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Chalcedony (Tumbled Pebble) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Tumbled Pebble)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

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

Yellow Quartz

SiO2 (Crystalline Silicon Dioxide)

Blue chalcedony (likely common blue agate) (Microcrystalline quartz, SiO₂; chalcedony variety) — mineral

Blue chalcedony (likely common blue agate)

Microcrystalline quartz, SiO₂; chalcedony variety

Banded Jasper (Silicate Mineral (Microcrystalline Quartz / SiO2)) — sedimentary

Banded Jasper

Silicate Mineral (Microcrystalline Quartz / SiO2)

Tumbled chalcedony (likely blue-gray agate) (Cryptocrystalline quartz, SiO₂; chalcedony/agate variety) — mineral

Tumbled chalcedony (likely blue-gray agate)

Cryptocrystalline quartz, SiO₂; chalcedony/agate variety

Agate (Cryptocrystalline Silicon Dioxide (SiO2)) — mineral

Agate

Cryptocrystalline Silicon Dioxide (SiO2)

Blue lace agate (tumbled) (Microcrystalline quartz, SiO₂ (chalcedony variety)) — mineral

Blue lace agate (tumbled)

Microcrystalline quartz, SiO₂ (chalcedony variety)

Yellow Jasper (Silicon Dioxide (SiO2)) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2)

Chrysocolla in Quartz (Gem Silica) (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / SiO2 (Quartz)) — mineral

Chrysocolla in Quartz (Gem Silica)

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / SiO2 (Quartz)