Rock Identifier

Category

Mineral, Variety Of Chalcedony (Microcrystalline Quartz)

Browse mineral, variety of chalcedony (microcrystalline quartz) specimens identified by the Rock Identifier community.

Amethyst (Quartz variety) (Amethyst - SiO2 (Silicon Dioxide with Iron impurities)) — mineral

Amethyst (Quartz variety)

Amethyst - SiO2 (Silicon Dioxide with Iron impurities)

Quartz (Smoky/Grey variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Grey variety)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Picture Jasper (Tectonically broken chalcedony (SiO2)) — sedimentary

Picture Jasper

Tectonically broken chalcedony (SiO2)

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

Tiger's Eye (dark/grey variant) (Pseudomorph of Quartz after Crocidolite (SiO2)) — mineral

Tiger's Eye (dark/grey variant)

Pseudomorph of Quartz after Crocidolite (SiO2)

Petrified Wood (Silicified wood (principally Silicon Dioxide, SiO2)) — sedimentary

Petrified Wood

Silicified wood (principally Silicon Dioxide, SiO2)

Carnelian (Carnelian (Silicon Dioxide - SiO2)) — mineral

Carnelian

Carnelian (Silicon Dioxide - SiO2)

Carnelian Agate (Carnelian (Silicon Dioxide - SiO2)) — mineral

Carnelian Agate

Carnelian (Silicon Dioxide - SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Silicon Dioxide (SiO2)) — Mineral

Quartz

Silicon Dioxide (SiO2)

Smoky Quartz with Calcite/Quartz Veining (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz with Calcite/Quartz Veining

Silicon Dioxide (SiO2)

Lake Superior Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Lake Superior Agate

Cryptocrystalline Quartz (SiO2)

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

Quartz

Quartz (SiO2 - Silicon Dioxide)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Ferruginous Quartz (Iron-stained Quartz (Silicon Dioxide, SiO2 with Fe2O3 inclusions)) — mineral

Ferruginous Quartz

Iron-stained Quartz (Silicon Dioxide, SiO2 with Fe2O3 inclusions)

Pink Quartzite (Water-worn) (Quartzite (SiO2)) — metamorphic

Pink Quartzite (Water-worn)

Quartzite (SiO2)

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

Quartz (Milky/Opaque variety)

Silicon Dioxide (SiO2)

Banded Agate (Gray/Blue Agate) (Agate (Silicon Dioxide, SiO2)) — mineral

Banded Agate (Gray/Blue Agate)

Agate (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Chalcedony (specifically Agate or Water-worn Quartzite) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (specifically Agate or Water-worn Quartzite)

Silicon Dioxide (SiO2)

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

Druzy Quartz (on Chalcedony/Agate base) (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz (on Chalcedony/Agate base)

Silicon Dioxide (SiO2)

Rough Quartz (Silicon Dioxide (SiO2)) — mineral

Rough Quartz

Silicon Dioxide (SiO2)

Quartz (likely tumbled or naturally water-worn) (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz (likely tumbled or naturally water-worn)

Quartz (SiO₂ - Silicon Dioxide)

Bloodstone (Heliotrope) (Silicon Dioxide (SiO2) with iron silicate and iron oxide inclusions) — Mineral

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with iron silicate and iron oxide inclusions

Carnelian Agate Nodule (Silicon Dioxide (SiO2) - Carnelian Chalcedony) — mineral

Carnelian Agate Nodule

Silicon Dioxide (SiO2) - Carnelian Chalcedony

Carnelian Agate (Chalcedony (SiO2) with iron oxide inclusions) — mineral

Carnelian Agate

Chalcedony (SiO2) with iron oxide inclusions

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO₂)

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

Druzy Quartz on Chert/Chalcedony (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz on Chert/Chalcedony

Silicon Dioxide (SiO2)

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

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron Oxide inclusions

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Moss Agate (Chalcedony (Silicon Dioxide, SiO2) with inclusions) — mineral

Moss Agate

Chalcedony (Silicon Dioxide, SiO2) with inclusions

White Quartz (Quartz (SiO2)) — Mineral

White Quartz

Quartz (SiO2)

Quartz (likely macrocrystalline variety) (Quartz (SiO₂)) — Mineral

Quartz (likely macrocrystalline variety)

Quartz (SiO₂)

Smoky Quartz (SiO2 (Silicon Dioxide)) — mineral

Smoky Quartz

SiO2 (Silicon Dioxide)

Chert Pebble (with Quartz Vein) (Chert (Cryptocrystalline Silica - SiO2)) — sedimentary

Chert Pebble (with Quartz Vein)

Chert (Cryptocrystalline Silica - SiO2)

Carved Mottled Greenish-Yellow Crystal/Glass Object (Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.) — Man-made Object/Uncertain Mineral

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Man-made Object/Uncertain Mineral

Quartz (Peach/Orange variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Peach/Orange variety)

Silicon Dioxide (SiO2)

Quartz (Pale Rose or Milky Variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Pale Rose or Milky Variety)

Silicon Dioxide (SiO2)