Rock Identifier

Category

Sedimentary Rock (Technically A Variety Of Chalcedony)

Browse sedimentary rock (technically a variety of chalcedony) specimens identified by the Rock Identifier community.

Learn about Sedimentary Rock (Technically A Variety Of Chalcedony) in the encyclopedia

Blue Chalcedony

Blue Chalcedony

Asphalt Rock

Rock Gypsum

Conglomerate

Breccia

Ironstone

Limestone

Syenite

Agate

Kentucky Agate

Shadow Agate

Chrysoprase

Jasper (Silicon dioxide (SiO2)) — mineral

Jasper

Silicon dioxide (SiO2)

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

Chalcedony (Agate/Chert variety)

Silicon Dioxide (SiO2)

Chalcedony (Chalcedony (SiO2)) — mineral

Chalcedony

Chalcedony (SiO2)

Polished jasper (likely brecciated or scenic jasper) (Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions) — gemstone

Polished jasper (likely brecciated or scenic jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions

Dyed and polished agate beads (Chalcedony (microcrystalline quartz), SiO₂; commonly agate) — gemstone

Dyed and polished agate beads

Chalcedony (microcrystalline quartz), SiO₂; commonly agate

Polished agate (likely Botswana or plume agate) (Microcrystalline quartz, mainly chalcedony (SiO₂), with iron-oxide inclusions) — gemstone

Polished agate (likely Botswana or plume agate)

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

Banded agate (likely carnelian/chalcedony) (Microcrystalline quartz, SiO₂; chalcedony with iron-oxide coloration) — mineral

Banded agate (likely carnelian/chalcedony)

Microcrystalline quartz, SiO₂; chalcedony with iron-oxide coloration

Tumbled orange chalcedony (likely carnelian) (Cryptocrystalline quartz, SiO₂; carnelian is orange-red chalcedony colored mainly by iron oxides) — gemstone

Tumbled orange chalcedony (likely carnelian)

Cryptocrystalline quartz, SiO₂; carnelian is orange-red chalcedony colored mainly by iron oxides

Agate Bookend / Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Agate Bookend / Quartz Geode

Silicon Dioxide (SiO2)

Polished carnelian agate (Microcrystalline quartz (chalcedony), SiO₂; iron-bearing carnelian/agate) — gemstone

Polished carnelian agate

Microcrystalline quartz (chalcedony), SiO₂; iron-bearing carnelian/agate

Jasper (likely Ocean Jasper or Variegated Jasper) (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper (likely Ocean Jasper or Variegated Jasper)

Silicon Dioxide (SiO2) with impurities

Polished brecciated jasper (likely picture jasper) (Silica-rich microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and clay inclusions) — metamorphic

Polished brecciated jasper (likely picture jasper)

Silica-rich microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and clay inclusions

Mookaite Jasper (Siliceous sedimentary rock (variety of Jasper/Chert)) — Sedimentary Rock

Mookaite Jasper

Siliceous sedimentary rock (variety of Jasper/Chert)

Sedimentary Rock

Polished carnelian agate (Microcrystalline quartz (chalcedony), SiO₂, colored mainly by iron oxides) — gemstone

Polished carnelian agate

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

Chalcedony (Tumbled Agate/Jasper) (Silicon dioxide (SiO2)) — sedimentary

Chalcedony (Tumbled Agate/Jasper)

Silicon dioxide (SiO2)

Jasper with Epidote Vein (Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))) — sedimentary

Jasper with Epidote Vein

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))

Green Jasper / Plasma (Microcrystalline Quartz (Chalcedony), SiO2 with inclusions) — gemstone

Green Jasper / Plasma

Microcrystalline Quartz (Chalcedony), SiO2 with inclusions

Polished pink banded agate (Banded chalcedony (microcrystalline quartz, SiO₂), likely dyed or naturally vivid pink) — mineral

Polished pink banded agate

Banded chalcedony (microcrystalline quartz, SiO₂), likely dyed or naturally vivid pink

Agate (Grey Agate Slice) (Microcrystalline Quartz (SiO2)) — mineral

Agate (Grey Agate Slice)

Microcrystalline Quartz (SiO2)

Red Jasper (Silicon dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Red Jasper (Jasper (SiO2) with Hematite (Fe2O3) inclusions) — sedimentary

Red Jasper

Jasper (SiO2) with Hematite (Fe2O3) inclusions

Tumbled agate (Microcrystalline quartz (chalcedony), SiO₂) — gemstone

Tumbled agate

Microcrystalline quartz (chalcedony), SiO₂

Yellow Jasper (Silicon dioxide (SiO2)) — mineral

Yellow Jasper

Silicon dioxide (SiO2)

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

Red jasper pebble

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

Tumbled agate or chalcedony (Microcrystalline quartz (SiO₂), likely agate/chalcedony with green inclusions) — gemstone

Tumbled agate or chalcedony

Microcrystalline quartz (SiO₂), likely agate/chalcedony with green inclusions

Polished banded agate (Microcrystalline quartz (chalcedony), SiO₂) — mineral

Polished banded agate

Microcrystalline quartz (chalcedony), SiO₂

Tree Agate (Silicon Dioxide (SiO2) with Chlorite/Manganese inclusions) — sedimentary

Tree Agate

Silicon Dioxide (SiO2) with Chlorite/Manganese inclusions

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

Red jasper pebble

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

Polished agate pebble (likely dyed or naturally banded chalcedony) (Chalcedony, microcrystalline SiO₂; agate is banded chalcedony) — mineral

Polished agate pebble (likely dyed or naturally banded chalcedony)

Chalcedony, microcrystalline SiO₂; agate is banded chalcedony

Blue Chalcedony (Silicon Dioxide (SiO2)) — gemstone

Blue Chalcedony

Silicon Dioxide (SiO2)

Chert / Flint (Silicon dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon dioxide (SiO2)

Chalcedony (Agate/Carnelian pebbles) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Agate/Carnelian pebbles)

Cryptocrystalline Quartz (SiO2)

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

Blue Lace Agate

Chalcedony (Silicon Dioxide, SiO2)

Blue Lace Agate (Chalcedony (SiO2)) — mineral

Blue Lace Agate

Chalcedony (SiO2)

Chert (Flint variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Green Chalcedony (Batu Akik) (Silicon Dioxide (SiO2)) — gemstone

Green Chalcedony (Batu Akik)

Silicon Dioxide (SiO2)

Tumbled red jasper (Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides) — mineral

Tumbled red jasper

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

Chert (Flint) (Silicon dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon dioxide (SiO2)

Jasper (Silicon Dioxide (SiO2)) — sedimentary

Jasper

Silicon Dioxide (SiO2)

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

Tumbled brown chalcedony/jasper

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

Polished red jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides.) — mineral

Polished red jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides.