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

Agate (Banded Chalcedony (SiO2)) — mineral

Agate

Banded Chalcedony (SiO2)

Lake Superior Agate (Banded Chalcedony (SiO2)) — mineral

Lake Superior Agate

Banded Chalcedony (SiO2)

Banded Carnelian Agate (Var. of Chalcedony (SiO2)) — mineral

Banded Carnelian Agate

Var. of Chalcedony (SiO2)

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Banded Agate (Chalcedony (SiO2) with impurities) — mineral

Banded Agate

Chalcedony (SiO2) with impurities

Crazy Lace Agate (Agate (Chalcedony), SiO2) — Mineral

Crazy Lace Agate

Agate (Chalcedony), SiO2

Polished Mexican “Crazy Lace” agate tower (Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions) — mineral

Polished Mexican “Crazy Lace” agate tower

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions

Blue-gray botryoidal mineral specimen (Likely botryoidal chalcedony or hemimorphite; species cannot be confirmed from the image alone) — mineral

Blue-gray botryoidal mineral specimen

Likely botryoidal chalcedony or hemimorphite; species cannot be confirmed from the image alone

Tumbled honey-brown chalcedony or agate (Microcrystalline quartz (SiO₂), likely chalcedony; exact identification requires testing) — mineral

Tumbled honey-brown chalcedony or agate

Microcrystalline quartz (SiO₂), likely chalcedony; exact identification requires testing

Amygdaloidal Basalt (Amygdaloidal Basalt (containing quartz/agate or zeolite fill)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (containing quartz/agate or zeolite fill)

Jasper and Chalcedony (Silicon Dioxide (SiO2) microcrystalline quartz) — sedimentary

Jasper and Chalcedony

Silicon Dioxide (SiO2) microcrystalline quartz

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartz / Chalcedony (Silicon Dioxide (SiO2)) — mineral

Quartz / Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Tumbled pale quartz/chalcedony fragment (Quartz (SiO₂), possibly microcrystalline chalcedony) — mineral

Tumbled pale quartz/chalcedony fragment

Quartz (SiO₂), possibly microcrystalline chalcedony

Black Onyx (Chalcedony (SiO2 with inclusions)) — mineral

Black Onyx

Chalcedony (SiO2 with inclusions)

Polished agate/geode fragment (Microcrystalline quartz (chalcedony), SiO₂, with possible calcite or quartz cavity lining) — mineral

Polished agate/geode fragment

Microcrystalline quartz (chalcedony), SiO₂, with possible calcite or quartz cavity lining

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Orange chalcedony or jasper fragment (Microcrystalline quartz (SiO₂), likely chalcedony/jasper) — mineral

Orange chalcedony or jasper fragment

Microcrystalline quartz (SiO₂), likely chalcedony/jasper

Black Onyx (Cryptocrystalline Chalcedony (SiO2)) — mineral

Black Onyx

Cryptocrystalline Chalcedony (SiO2)

Tumbled Carnelian and Quartz Mix (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Tumbled Carnelian and Quartz Mix

Silicon Dioxide (SiO2) with iron oxide impurities

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Blue Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Blue Chalcedony

Cryptocrystalline Quartz (SiO2)

Jasper (Silicon dioxide, SiO2) — Mineral

Jasper

Silicon dioxide, SiO2

Botryoidal chalcedony (likely white quartz/chalcedony) (Microcrystalline quartz, SiO₂; possibly partly altered carbonate or opaline silica) — mineral

Botryoidal chalcedony (likely white quartz/chalcedony)

Microcrystalline quartz, SiO₂; possibly partly altered carbonate or opaline silica

Chalcedony (Quartz Pebble) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Quartz Pebble)

Cryptocrystalline Quartz (SiO2)

Moss Agate (Crescent Moon Shape) (Silicon Dioxide (SiO2) with iron/manganese inclusions) — mineral

Moss Agate (Crescent Moon Shape)

Silicon Dioxide (SiO2) with iron/manganese inclusions

Banded Agate (Chalcedony (SiO2 with impurities)) — mineral

Banded Agate

Chalcedony (SiO2 with impurities)

Carnelian (Carnelian (Chalcedony / SiO2)) — mineral

Carnelian

Carnelian (Chalcedony / SiO2)

Agate (Banded Chalcedony (SiO2)) — mineral

Agate

Banded Chalcedony (SiO2)

Carnelian (Carnelian Chalcedony (SiO2)) — mineral

Carnelian

Carnelian Chalcedony (SiO2)

Lake Superior Agate (Banded Chalcedony (SiO2)) — mineral

Lake Superior Agate

Banded Chalcedony (SiO2)

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Moss Agate with Jasper (Chalcedony (SiO2 with inclusions)) — mineral

Moss Agate with Jasper

Chalcedony (SiO2 with inclusions)

Dragon Vein Agate (Chalcedony (Quartz) - SiO2) — mineral

Dragon Vein Agate

Chalcedony (Quartz) - SiO2

Leopard Skin Jasper (Chalcedony (cryptocrystalline Quartz)) — Mineral

Leopard Skin Jasper

Chalcedony (cryptocrystalline Quartz)

Carnelian (Banded Agate) (Carnelian Chalcedony (SiO2)) — mineral

Carnelian (Banded Agate)

Carnelian Chalcedony (SiO2)

Black Onyx (Black Chalcedony (SiO2)) — mineral

Black Onyx

Black Chalcedony (SiO2)

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Dyed Agate (Chalcedony (SiO2 with impurities)) — mineral

Dyed Agate

Chalcedony (SiO2 with impurities)