Rock Identifier

Category

Mineral (Variety Of Chalcedony)

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

Learn about Mineral (Variety Of Chalcedony) 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

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Chalcopyrite (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite

Chalcopyrite (CuFeS2)

Quartz Pebble with Drusy/Crystalline Pocket (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble with Drusy/Crystalline Pocket

Silicon Dioxide (SiO2)

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Quartz Geode (Quartz (Silicon Dioxide, SiO2) Geode) — sedimentary

Quartz Geode

Quartz (Silicon Dioxide, SiO2) Geode

Banded Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

Blue Dyed Agate (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Blue Dyed Agate

Silicon Dioxide (SiO2) with artificial pigment

Banded Agate (Cryptocrystalline Silica (SiO2)) — mineral

Banded Agate

Cryptocrystalline Silica (SiO2)

Quartz Geode (Silicon Dioxide (SiO2) in a sedimentary host) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2) in a sedimentary host

Small rounded pebble, likely quartz-rich river stone (Indeterminate; likely quartz/chert-bearing lithic clast) — sedimentary

Small rounded pebble, likely quartz-rich river stone

Indeterminate; likely quartz/chert-bearing lithic clast

Chrysocolla on Quartz (Chrysocolla (Cu2−xAlx(H2−xSi2O5)(OH)4·nH2O) often associated with Quartz (SiO2)) — mineral

Chrysocolla on Quartz

Chrysocolla (Cu2−xAlx(H2−xSi2O5)(OH)4·nH2O) often associated with Quartz (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Druzy Quartz (on Chalcedony/Agate base) (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz (on Chalcedony/Agate base)

Silicon Dioxide (SiO2)

Petrified Wood (Agatized/Silicified Wood) (Silicified Wood / Chalcedony (SiO2)) — sedimentary

Petrified Wood (Agatized/Silicified Wood)

Silicified Wood / Chalcedony (SiO2)

Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2) — Mineral

Fuchsite

K(Al,Cr)2(AlSi3O10)(OH)2

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Rose Quartz (SiO2 (Silicon Dioxide)) — mineral

Rose Quartz

SiO2 (Silicon Dioxide)

Blue Caribbean Calite (Calcium Carbonate (CaCO3) with trace Aragonite) — mineral

Blue Caribbean Calite

Calcium Carbonate (CaCO3) with trace Aragonite

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Yellow Chalcedony (common opal or chert variant) (Silicon Dioxide (SiO2)) — sedimentary (mineraloid/microcrystalline quartz)

Yellow Chalcedony (common opal or chert variant)

Silicon Dioxide (SiO2)

sedimentary (mineraloid/microcrystalline quartz)

Red Jasper (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Red Jasper

Microcrystalline Quartz (Chalcedony), SiO2

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Dyed blue quartz or druzy geode (likely) (Quartz, silicon dioxide (SiO₂), probably artificially colored) — mineral

Dyed blue quartz or druzy geode (likely)

Quartz, silicon dioxide (SiO₂), probably artificially colored

Banded Agate (Tumbled) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Banded Agate (Tumbled)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Banded Agate (Lake Superior Agate) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Banded Agate (Lake Superior Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

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

Agate / Chalcedony Pebble

Silicon Dioxide (SiO2)

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

Chalcedony with Druzy Quartz

Silicon Dioxide (SiO2)

Chalcedony (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (River Pebble)

Silicon Dioxide (SiO2)

Dyed Agate (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Agate

Silicon Dioxide (SiO2) with artificial pigment

Chalcedony Geode Part (Agate/Quartz) (Silicon Dioxide (SiO2)) — mineral

Chalcedony Geode Part (Agate/Quartz)

Silicon Dioxide (SiO2)

Chalcedony (Commonly known as Carnelian or Agate pebble) (Microcrystalline Quartz (SiO2)) — mineral

Chalcedony (Commonly known as Carnelian or Agate pebble)

Microcrystalline Quartz (SiO2)

Dendritic Chalcedony (Agate) (Cryptocrystalline Quartz (SiO2)) — mineral

Dendritic Chalcedony (Agate)

Cryptocrystalline Quartz (SiO2)

Milky Quartz (Silicon dioxide (SiO2)) — mineral

Milky Quartz

Silicon dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Carnelian (Carnelian (SiO2)) — mineral

Carnelian

Carnelian (SiO2)

Dyed Agate (Agate (SiO2)) — Mineral

Dyed Agate

Agate (SiO2)

Black Onyx and Mother of Pearl (Cryptocrystalline Quartz (SiO2) and Nacre (Calcium Carbonate)) — mineral

Black Onyx and Mother of Pearl

Cryptocrystalline Quartz (SiO2) and Nacre (Calcium Carbonate)