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

Grey Agate (Tumbled) (Silicon Dioxide (SiO2)) — mineral

Grey Agate (Tumbled)

Silicon Dioxide (SiO2)

Jasper (Chert) (Silicon Dioxide (SiO2)) — sedimentary

Jasper (Chert)

Silicon Dioxide (SiO2)

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

Agate

Chalcedony (Silicon Dioxide, SiO2)

Tumbled brown chalcedony or jasper (Microcrystalline quartz, SiO₂; possibly iron-bearing jasper) — mineral

Tumbled brown chalcedony or jasper

Microcrystalline quartz, SiO₂; possibly iron-bearing jasper

Chalcedony (Silicon Dioxide (SiO₂)) — mineral

Chalcedony

Silicon Dioxide (SiO₂)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Chalcedony Nodule in Matrix (Silicon Dioxide (SiO2)) — mineral

Chalcedony Nodule in Matrix

Silicon Dioxide (SiO2)

Agate (Silicon dioxide (SiO2) - variety Chalcedony) — mineral

Agate

Silicon dioxide (SiO2) - variety Chalcedony

Banded Agate (specifically Carnelian Agate) (Silicon dioxide (SiO2) - Chalcedony variety) — mineral

Banded Agate (specifically Carnelian Agate)

Silicon dioxide (SiO2) - Chalcedony variety

Yellow Jasper (Silicon Dioxide (SiO2) with iron hydroxides) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

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

Tumbled pale quartz/chalcedony fragment

Quartz (SiO₂), possibly microcrystalline chalcedony

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

Chalcedony (Agate / Moss Agate)

Silicon Dioxide (SiO2)

Banded Agate (Polished Slice) (Chalcedony (SiO2) with Quartz) — mineral

Banded Agate (Polished Slice)

Chalcedony (SiO2) with Quartz

Red Jasper (Red Jasper (variety of Chalcedony, SiO₂)) — Mineral

Red Jasper

Red Jasper (variety of Chalcedony, SiO₂)

Polished brown stone, possibly jasper (Likely iron-rich microcrystalline quartz (SiO₂); exact identification is uncertain from the image) — gemstone

Polished brown stone, possibly jasper

Likely iron-rich microcrystalline quartz (SiO₂); exact identification is uncertain from the image

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

Carnelian

Silicon Dioxide (Chalcedony variety), SiO2

Blue Lace Agate (Silicon Dioxide (SiO2) - Variety of Chalcedony) — mineral

Blue Lace Agate

Silicon Dioxide (SiO2) - Variety of Chalcedony

Carnelian Agate (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Agate (specifically Waterline or Onyx-type Agate) (Silicon Dioxide (SiO2) - variety Chalcedony) — mineral

Agate (specifically Waterline or Onyx-type Agate)

Silicon Dioxide (SiO2) - variety Chalcedony

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

Chalcedony (Agate/Chert variety)

Silicon Dioxide (SiO2)

Jasper (Green) (Silicon dioxide (SiO2)) — Mineral/Sedimentary

Jasper (Green)

Silicon dioxide (SiO2)

Mineral/Sedimentary

Dyed Blue Agate Slice (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Dyed Blue Agate Slice

Chalcedony (Silicon Dioxide, SiO2)

Orange chalcedony or carnelian fragment (Microcrystalline quartz, SiO₂; carnelian is orange cryptocrystalline quartz colored mainly by iron oxides) — gemstone

Orange chalcedony or carnelian fragment

Microcrystalline quartz, SiO₂; carnelian is orange cryptocrystalline quartz colored mainly by iron oxides

Tumbled carnelian/chalcedony (Cryptocrystalline quartz (SiO₂), likely iron-stained chalcedony) — gemstone

Tumbled carnelian/chalcedony

Cryptocrystalline quartz (SiO₂), likely iron-stained chalcedony

Chalcedony (rough) (Microcrystalline quartz, SiO₂; likely gray chalcedony with iron-oxide staining) — mineral

Chalcedony (rough)

Microcrystalline quartz, SiO₂; likely gray chalcedony with iron-oxide staining

Tumbled banded agate (likely chalcedony) (Banded microcrystalline quartz, SiO₂; chalcedony variety) — mineral

Tumbled banded agate (likely chalcedony)

Banded microcrystalline quartz, SiO₂; chalcedony variety

Yellow chalcedony (likely tumbled quartz) (Chalcedony, cryptocrystalline SiO₂; possibly iron-stained quartz or yellow jasper) — mineral

Yellow chalcedony (likely tumbled quartz)

Chalcedony, cryptocrystalline SiO₂; possibly iron-stained quartz or yellow jasper

Red jasper (Microcrystalline quartz (SiO₂), colored mainly by iron oxides) — mineral

Red jasper

Microcrystalline quartz (SiO₂), colored mainly by iron oxides

Tumbled jasper or chalcedony (Microcrystalline quartz, SiO₂; likely opaque jasper with chalcedonic zones) — mineral

Tumbled jasper or chalcedony

Microcrystalline quartz, SiO₂; likely opaque jasper with chalcedonic zones

Tumbled jasper or chert (Microcrystalline quartz (SiO₂), likely iron-stained jasper) — mineral

Tumbled jasper or chert

Microcrystalline quartz (SiO₂), likely iron-stained jasper

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

Tumbled yellow jasper or chert

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

Polished blue-gray agate/geode slice (tentative) (Microcrystalline quartz (chalcedony), SiO₂, possibly with druzy quartz) — mineral

Polished blue-gray agate/geode slice (tentative)

Microcrystalline quartz (chalcedony), SiO₂, possibly with druzy quartz

Jasper (Silicon Dioxide (Quartz variety, SiO2)) — mineral

Jasper

Silicon Dioxide (Quartz variety, SiO2)

Polished yellow chalcedony (likely quartz pebble) (Chalcedony, microcrystalline quartz (SiO₂), possibly iron-stained jasper) — mineral

Polished yellow chalcedony (likely quartz pebble)

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

Agate in Matrix (Silicon Dioxide (SiO2) within host rock) — mineral

Agate in Matrix

Silicon Dioxide (SiO2) within host rock

Red Jasper (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Brown Agate (Silicon Dioxide (SiO2)) — mineral

Brown Agate

Silicon Dioxide (SiO2)

Gray Agate with Druzy Quartz Geode (Cryptocrystalline Quartz (SiO2)) — mineral

Gray Agate with Druzy Quartz Geode

Cryptocrystalline Quartz (SiO2)

Red Jasper (Red Jasper (SiO2 with Hematite inclusions)) — mineral

Red Jasper

Red Jasper (SiO2 with Hematite inclusions)

Dyed Agate (SiO2) — Mineral

Dyed Agate

SiO2

Agate (specifically Botswana or Lake Superior style chalcedony) (Silicon Dioxide (SiO2)) — mineral

Agate (specifically Botswana or Lake Superior style chalcedony)

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions