Rock Identifier

Category

Mineral (Chalcedony)

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

Learn about Mineral (Chalcedony) in the encyclopedia

Chalcedony

Blue Chalcedony

Blue Chalcedony

Chrome Chalcedony

Chrome Chalcedony

Gem Silica

Plume Agate

Landscape Agate

Landscape Agate

Chrysoprase

Sard

Prase

Glauconite

Sagenite Agate

Grape Agate

Jasper (Silicon Dioxide (SiO2)) — mineral

Jasper

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Light-colored agate (likely chalcedony) (Chalcedony, microcrystalline quartz (SiO₂); exact variety is uncertain from the image) — mineral

Light-colored agate (likely chalcedony)

Chalcedony, microcrystalline quartz (SiO₂); exact variety is uncertain from the image

Polished/tumbled pale-yellow stone, possibly calcite (Likely calcite (CaCO₃); identification is uncertain from the image alone) — mineral

Polished/tumbled pale-yellow stone, possibly calcite

Likely calcite (CaCO₃); identification is uncertain from the image alone

Polished banded agate (Agate, a banded variety of microcrystalline quartz (SiO₂; chalcedony)) — mineral

Polished banded agate

Agate, a banded variety of microcrystalline quartz (SiO₂; chalcedony)

Gemstone Tree Brooch (Agate and Quartz) (Silicon Dioxide (SiO2)) — mineral

Gemstone Tree Brooch (Agate and Quartz)

Silicon Dioxide (SiO2)

Botryoidal Chalcedony (Silicon Dioxide (SiO2)) — mineral

Botryoidal Chalcedony

Silicon Dioxide (SiO2)

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

Tumbled yellow chalcedony (probable)

Chalcedony, microcrystalline quartz (SiO₂), possibly iron-stained jasper

Tumbled blue chalcedony (possibly blue agate) (Microcrystalline quartz, SiO₂; chalcedony variety) — mineral

Tumbled blue chalcedony (possibly blue agate)

Microcrystalline quartz, SiO₂; chalcedony variety

Lake Superior Agate (SiO2 (Quartz variety chalcedony)) — gemstone

Lake Superior Agate

SiO2 (Quartz variety chalcedony)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Orange-brown tumbled mineral specimen (Indeterminate; possibly iron-stained chalcedony, quartz, or jasper) — mineral

Orange-brown tumbled mineral specimen

Indeterminate; possibly iron-stained chalcedony, quartz, or jasper

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

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

Chalcedony (Quartz Pebble)

Cryptocrystalline Quartz (SiO2)

Botryoidal Chalcedony (Silicon Dioxide (SiO2)) — mineral

Botryoidal Chalcedony

Silicon Dioxide (SiO2)

Petrified Wood (Silicified wood (SiO2)) — fossil

Petrified Wood

Silicified wood (SiO2)

Blue Chalcedony (Silicon dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon dioxide (SiO2)

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

Blue Chalcedony

Chalcedony (Silicon Dioxide, SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Red Chalcedony (likely dyed) (Chalcedony (a variety of Quartz), SiO2) — Mineral (Cryptocrystalline Quartz)

Red Chalcedony (likely dyed)

Chalcedony (a variety of Quartz), SiO2

Mineral (Cryptocrystalline Quartz)

Agate (chalcedony), likely a cut nodule (Agate, a banded variety of microcrystalline quartz (SiO₂); associated iron oxides stain the rough outer matrix.) — mineral

Agate (chalcedony), likely a cut nodule

Agate, a banded variety of microcrystalline quartz (SiO₂); associated iron oxides stain the rough outer matrix.

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

Chert or chalcedony fragment

Microcrystalline quartz (SiO₂), likely ferruginous chalcedony/jasper

Jasper with Chalcedony (Silicon Dioxide (SiO2)) — mineral

Jasper with Chalcedony

Silicon Dioxide (SiO2)

Flower Agate (Chalcedony (SiO2) with Platy inclusions) — mineral

Flower Agate

Chalcedony (SiO2) with Platy inclusions

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

Chalcedony on Matrix

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

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

Chalcedony (Yellow Agate / Carnelian Chalcedony)

Silicon Dioxide (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

Chalcedony (Agate/Quartz variety) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Agate/Quartz variety)

Cryptocrystalline Quartz (SiO2)

Agate (Cryptocrystalline quartz (SiO2)) — Mineral

Agate

Cryptocrystalline quartz (SiO2)

Tumbled blue chalcedony (probable) (Chalcedony, microcrystalline quartz (SiO₂), possibly blue quartz or dyed chalcedony) — mineral

Tumbled blue chalcedony (probable)

Chalcedony, microcrystalline quartz (SiO₂), possibly blue quartz or dyed chalcedony

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

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

Quartz (Chalcedony)

Silicon Dioxide (SiO2)

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

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

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

Chalcedony (Carnelian)

Silicon Dioxide (SiO2)