Rock Identifier

Category

Mineral (Chalcedony Variety)

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

Learn about Mineral (Chalcedony Variety) in the encyclopedia

Blue Chalcedony

Blue Chalcedony

Brookite

Agate

Prase

Chrysoprase

Sard

Blue Lace Agate

Blue Lace Agate

Carnelian

Blue Jasper

Jasper

Plume Agate

Sagenite Agate

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

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron inclusions

Tumbled quartz-rich pebble (Quartz (SiO₂), possibly chalcedony or quartzite) — mineral

Tumbled quartz-rich pebble

Quartz (SiO₂), possibly chalcedony or quartzite

Dyed Agate (Silicon Dioxide (SiO2) - Chalcedony variety) — sedimentary

Dyed Agate

Silicon Dioxide (SiO2) - Chalcedony variety

Blue chalcedony (likely dyed or coated) (Microcrystalline quartz, SiO₂ (chalcedony)) — mineral

Blue chalcedony (likely dyed or coated)

Microcrystalline quartz, SiO₂ (chalcedony)

Carnelian agate (likely chalcedony) (Microcrystalline quartz, SiO₂; orange coloration commonly from iron oxides) — mineral

Carnelian agate (likely chalcedony)

Microcrystalline quartz, SiO₂; orange coloration commonly from iron oxides

Tumbled jasper or chert pebble (Microcrystalline quartz, mainly SiO₂, likely jasper/chert) — mineral

Tumbled jasper or chert pebble

Microcrystalline quartz, mainly SiO₂, likely jasper/chert

Tumbled jasper, likely brecciated or orbicular jasper (Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide impurities) — mineral

Tumbled jasper, likely brecciated or orbicular jasper

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

Botryoidal chalcedony (likely blue-gray agate) (Chalcedony, microcrystalline quartz (SiO₂), commonly with iron-oxide staining) — mineral

Botryoidal chalcedony (likely blue-gray agate)

Chalcedony, microcrystalline quartz (SiO₂), commonly with iron-oxide staining

Polished brown jasper pebble (Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities) — mineral

Polished brown jasper pebble

Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities

Polished brown jasper (likely brecciated or orbicular jasper) (Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide inclusions) — mineral

Polished brown jasper (likely brecciated or orbicular jasper)

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

Polished amber agate pendant/beads (Chalcedony (microcrystalline quartz), SiO₂, likely iron-stained yellow-orange agate) — mineral

Polished amber agate pendant/beads

Chalcedony (microcrystalline quartz), SiO₂, likely iron-stained yellow-orange agate

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

Tumbled agate or chalcedony pebble

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

Tumbled banded agate (Microcrystalline quartz (chalcedony), SiO₂, with layered impurities) — mineral

Tumbled banded agate

Microcrystalline quartz (chalcedony), SiO₂, with layered impurities

Tumbled jasper or chert (Microcrystalline quartz (SiO₂), likely opaque chalcedony/jasper) — mineral

Tumbled jasper or chert

Microcrystalline quartz (SiO₂), likely opaque chalcedony/jasper

Possible chrysoprase or botryoidal chalcedony (Cryptocrystalline quartz, SiO₂; green color may result from nickel-bearing chalcedony) — mineral

Possible chrysoprase or botryoidal chalcedony

Cryptocrystalline quartz, SiO₂; green color may result from nickel-bearing chalcedony

Jasper / Agate / Chalcedony (Cryptocrystalline quartz (SiO2)) — mineral

Jasper / Agate / Chalcedony

Cryptocrystalline quartz (SiO2)

Polished brecciated jasper (likely dragon-blood or leopard jasper) (Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions) — mineral

Polished brecciated jasper (likely dragon-blood or leopard jasper)

Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions

Tumbled yellow-orange jasper (Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides) — mineral

Tumbled yellow-orange jasper

Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides

Red jasper (tumbled) (Microcrystalline quartz/chalcedony, SiO₂, colored chiefly by iron oxides) — mineral

Red jasper (tumbled)

Microcrystalline quartz/chalcedony, SiO₂, colored chiefly by iron oxides

Jasper pebble, likely brecciated jasper (Microcrystalline quartz (SiO₂), commonly with iron-oxide impurities) — mineral

Jasper pebble, likely brecciated jasper

Microcrystalline quartz (SiO₂), commonly with iron-oxide impurities

Banded agate tower (likely onyx/chalcedony) (Microcrystalline quartz, SiO₂; commonly called banded agate or black-and-white onyx) — mineral

Banded agate tower (likely onyx/chalcedony)

Microcrystalline quartz, SiO₂; commonly called banded agate or black-and-white onyx

Tree Agate (Dendritic Agate (Silicon Dioxide, SiO2)) — mineral

Tree Agate

Dendritic Agate (Silicon Dioxide, SiO2)

Polished banded jasper pebble (Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide and clay/mineral impurities) — mineral

Polished banded jasper pebble

Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide and clay/mineral impurities

Banded Agate / Chalcedony (Silicon Dioxide (SiO2) with trace impurities) — mineral

Banded Agate / Chalcedony

Silicon Dioxide (SiO2) with trace impurities

Blue Lace Agate (Chalcedony (SiO2) with trace minerals) — mineral

Blue Lace Agate

Chalcedony (SiO2) with trace minerals

Lake Superior Agate (Silicon dioxide (chalcedony variety quartz)) — sedimentary

Lake Superior Agate

Silicon dioxide (chalcedony variety quartz)

Polished carnelian/chalcedony (Chalcedony, microcrystalline quartz (SiO₂), with iron-oxide coloration) — gemstone

Polished carnelian/chalcedony

Chalcedony, microcrystalline quartz (SiO₂), with iron-oxide coloration

Tumbled orange chalcedony (likely carnelian) (Chalcedony, microcrystalline quartz (SiO₂), commonly colored by iron oxides) — gemstone

Tumbled orange chalcedony (likely carnelian)

Chalcedony, microcrystalline quartz (SiO₂), commonly colored by iron oxides

Carnelian (orange chalcedony) (Chalcedony, microcrystalline quartz (SiO₂), iron-oxide colored) — gemstone

Carnelian (orange chalcedony)

Chalcedony, microcrystalline quartz (SiO₂), iron-oxide colored

Red jasper (likely brecciated jasper) (Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides) — mineral

Red jasper (likely brecciated jasper)

Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides

Red jasper pebble (Jasper, opaque microcrystalline quartz (SiO₂), colored mainly by iron oxides) — mineral

Red jasper pebble

Jasper, opaque microcrystalline quartz (SiO₂), colored mainly by iron oxides

Tumbled brown jasper (Microcrystalline quartz (SiO₂), commonly with iron-oxide inclusions) — mineral

Tumbled brown jasper

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

Banded Agate (Chert / Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (Chert / Chalcedony)

Silicon Dioxide (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

Green chalcedony (possibly chrysoprase) cabochon (Chalcedony, microcrystalline quartz (SiO₂); chrysoprase is nickel-colored chalcedony) — gemstone

Green chalcedony (possibly chrysoprase) cabochon

Chalcedony, microcrystalline quartz (SiO₂); chrysoprase is nickel-colored chalcedony

Jasper (Jasper (Silica/Quartz) - SiO2) — mineral

Jasper

Jasper (Silica/Quartz) - SiO2

Black Onyx (Onyx (Silicon Dioxide, SiO2)) — mineral

Black Onyx

Onyx (Silicon Dioxide, SiO2)

Polished banded agate, likely moss or dendritic agate (Microcrystalline quartz (chalcedony), SiO₂, with iron/manganese inclusions) — mineral

Polished banded agate, likely moss or dendritic agate

Microcrystalline quartz (chalcedony), SiO₂, with iron/manganese inclusions

Tumbled jasper (possibly orbicular jasper) (Microcrystalline quartz, SiO₂; jasper is an opaque variety of chalcedony) — mineral

Tumbled jasper (possibly orbicular jasper)

Microcrystalline quartz, SiO₂; jasper is an opaque variety of chalcedony

Polished orange chalcedony or carnelian (Microcrystalline quartz (SiO₂), commonly called carnelian when orange-red) — gemstone

Polished orange chalcedony or carnelian

Microcrystalline quartz (SiO₂), commonly called carnelian when orange-red

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

Tumbled orange chalcedony or carnelian

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

Tumbled carnelian (likely reddish chalcedony) (Chalcedony, microcrystalline quartz (SiO₂), iron-oxide colored) — gemstone

Tumbled carnelian (likely reddish chalcedony)

Chalcedony, microcrystalline quartz (SiO₂), iron-oxide colored