Rock Identifier

Category

Mineral (Chalcedony)

Browse mineral (chalcedony) specimens identified by the Rock Identifier community.

Learn about Mineral (Chalcedony) in the encyclopedia

Chalcedony

Chrome Chalcedony

Chrome Chalcedony

Blue Chalcedony

Blue Chalcedony

Gem Silica

Plume Agate

Landscape Agate

Landscape Agate

Chrysoprase

Sard

Prase

Glauconite

Sagenite Agate

Grape Agate

Blue Agate (Dyed or Treated Chalcedony) (Silicon Dioxide (SiO2), microcrystalline quartz variety) — mineral

Blue Agate (Dyed or Treated Chalcedony)

Silicon Dioxide (SiO2), microcrystalline quartz variety

Agate (Puddingstone style) (Silicon Dioxide (SiO2) with impurities) — mineral

Agate (Puddingstone style)

Silicon Dioxide (SiO2) with impurities

Tumbled agate and chalcedony specimens (Microcrystalline quartz (SiO₂), chiefly chalcedony/agate) — mineral

Tumbled agate and chalcedony specimens

Microcrystalline quartz (SiO₂), chiefly chalcedony/agate

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

Tumbled orange chalcedony or jasper

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

Tumbled orange chalcedony (likely carnelian) (Microcrystalline quartz, SiO₂; iron-bearing variety commonly termed carnelian) — mineral

Tumbled orange chalcedony (likely carnelian)

Microcrystalline quartz, SiO₂; iron-bearing variety commonly termed carnelian

Tumbled blue chalcedony (Chalcedony, microcrystalline quartz (SiO₂)) — mineral

Tumbled blue chalcedony

Chalcedony, microcrystalline quartz (SiO₂)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Chalcedony (Silicon dioxide (SiO2) - Microcrystalline quartz) — mineral

Chalcedony

Silicon dioxide (SiO2) - Microcrystalline quartz

Chalcedony (Banded/Mottled Variety) (Chalcedony (a cryptocrystalline variety of Quartz, SiO2)) — Mineral

Chalcedony (Banded/Mottled Variety)

Chalcedony (a cryptocrystalline variety of Quartz, SiO2)

Honey-colored chalcedony (likely carnelian) (Microcrystalline quartz, SiO₂; orange chalcedony colored by iron oxides) — mineral

Honey-colored chalcedony (likely carnelian)

Microcrystalline quartz, SiO₂; orange chalcedony colored by iron oxides

Botryoidal Chalcedony with Calcite (Chalcedony (SiO2 with accessory minerals, likely CaCO3)) — Mineral

Botryoidal Chalcedony with Calcite

Chalcedony (SiO2 with accessory minerals, likely CaCO3)

Chalcedony (Common Opal variant or Agate pebble) (Silicon dioxide (SiO2)) — mineral

Chalcedony (Common Opal variant or Agate pebble)

Silicon dioxide (SiO2)

Botryoidal chalcedony with quartz vug (Microcrystalline quartz, SiO₂ (chalcedony), with a drusy quartz-lined cavity) — mineral

Botryoidal chalcedony with quartz vug

Microcrystalline quartz, SiO₂ (chalcedony), with a drusy quartz-lined cavity

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Tumbled yellow chalcedony or quartz (Chalcedony (microcrystalline SiO₂), possibly iron-stained quartz) — mineral

Tumbled yellow chalcedony or quartz

Chalcedony (microcrystalline SiO₂), possibly iron-stained quartz

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Tumbled orange-and-white chalcedony/agate (Microcrystalline quartz (SiO₂), likely iron-stained chalcedony or carnelian-bearing agate) — mineral

Tumbled orange-and-white chalcedony/agate

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony or carnelian-bearing agate

Tumbled Yellow Chalcedony / Iron-Stained Quartz (Silicon Dioxide (SiO2)) — mineral

Tumbled Yellow Chalcedony / Iron-Stained Quartz

Silicon Dioxide (SiO2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Chalcedony (Chalcedony (SiO2)) — mineral

Chalcedony

Chalcedony (SiO2)

Chalcedony (Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)) — mineral

Chalcedony

Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)

Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony

Cryptocrystalline Quartz (SiO2)

Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony

Cryptocrystalline Quartz (SiO2)

Chalcedony (Chalcedony (a microcrystalline variety of Quartz, SiO2)) — Mineral

Chalcedony

Chalcedony (a microcrystalline variety of Quartz, SiO2)

Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony

Cryptocrystalline Quartz (SiO2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Tumbled jasper (likely brecciated or mahogany jasper) (Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide inclusions) — mineral

Tumbled jasper (likely brecciated or mahogany jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide inclusions

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

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Polished yellow-green chalcedony (likely serpentine or quartz pebble) (Microcrystalline quartz, SiO₂ (if chalcedony); possible antigorite/lizardite, Mg₃Si₂O₅(OH)₄ (if serpentine)) — mineral

Polished yellow-green chalcedony (likely serpentine or quartz pebble)

Microcrystalline quartz, SiO₂ (if chalcedony); possible antigorite/lizardite, Mg₃Si₂O₅(OH)₄ (if serpentine)

Carnelian (Chalcedony (SiO2)) — mineral

Carnelian

Chalcedony (SiO2)

Chalcedony with Quartz Crystals (Silicon Dioxide (SiO2)) — mineral

Chalcedony with Quartz Crystals

Silicon Dioxide (SiO2)

Chalcedony (Chalcedony (SiO2)) — mineral

Chalcedony

Chalcedony (SiO2)

Chalcedony on Matrix (Silicon Dioxide (SiO2)) — mineral

Chalcedony on Matrix

Silicon Dioxide (SiO2)

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

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Chalcedony (Common Opal or Agate variant) (Silicon dioxide (SiO2) with trace hydration) — mineral

Chalcedony (Common Opal or Agate variant)

Silicon dioxide (SiO2) with trace hydration

Chalcedony (Moonstone-like Agate) (Silicon Dioxide (SiO₂)) — mineral

Chalcedony (Moonstone-like Agate)

Silicon Dioxide (SiO₂)

Tumbled chalcedony or agate fragment (Microcrystalline quartz (SiO₂), likely chalcedony; exact identification is limited by the small, opaque image) — mineral

Tumbled chalcedony or agate fragment

Microcrystalline quartz (SiO₂), likely chalcedony; exact identification is limited by the small, opaque image

Tumbled carnelian/chalcedony (Chalcedony (microcrystalline quartz), SiO₂; reddish color from iron oxides) — mineral

Tumbled carnelian/chalcedony

Chalcedony (microcrystalline quartz), SiO₂; reddish color from iron oxides

Tumbled pink chalcedony (likely pink agate/jasper) (Microcrystalline quartz, SiO₂, with iron-oxide coloring) — mineral

Tumbled pink chalcedony (likely pink agate/jasper)

Microcrystalline quartz, SiO₂, with iron-oxide coloring