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

Amazonite (Microcline feldspar (KAlSi₃O₈), green variety) — mineral

Amazonite

Microcline feldspar (KAlSi₃O₈), green variety

Slate (Foliated Metamorphic Rock) — metamorphic

Slate

Foliated Metamorphic Rock

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Brown Quartz (Jasper or Chert) (Silicon Dioxide (SiO2)) — sedimentary

Brown Quartz (Jasper or Chert)

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Emerald In Matrix (Quartz/Calcite) (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald In Matrix (Quartz/Calcite)

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Banded Jasper (Mookaite / Chert) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Banded Jasper (Mookaite / Chert)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Satin Spar (Selenite) (Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O) — mineral

Satin Spar (Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Quartz Geode (with Agate banding) (Silicon Dioxide (SiO2)) — Sedimentary or Igneous (secondary formation)

Quartz Geode (with Agate banding)

Silicon Dioxide (SiO2)

Sedimentary or Igneous (secondary formation)

Barite (Barium sulfate (BaSO4)) — mineral

Barite

Barium sulfate (BaSO4)

Pyrite or Chalcopyrite (Iron sulfide (FeS2) or Copper iron sulfide (CuFeS2)) — mineral

Pyrite or Chalcopyrite

Iron sulfide (FeS2) or Copper iron sulfide (CuFeS2)

Dalmatian Stone (Dalmatian Jasper (not a true jasper, typically an igneous perthite)) — igneous

Dalmatian Stone

Dalmatian Jasper (not a true jasper, typically an igneous perthite)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Dzi Bead (Agate Bead) (Cryptocrystalline Quartz (SiO2) - Chalcedony/Agate) — mineral

Dzi Bead (Agate Bead)

Cryptocrystalline Quartz (SiO2) - Chalcedony/Agate

Banded Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

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

Agate (Banded Chalcedony)

Agate (Silicon Dioxide, SiO2)

Banded Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

Bacan Stone (Chrysocolla-in-Chalcedony) (Chrysocolla in Chalcedony (SiO2 with (Cu, Al)2H2Si2O5(OH)4·nH2O)) — mineral

Bacan Stone (Chrysocolla-in-Chalcedony)

Chrysocolla in Chalcedony (SiO2 with (Cu, Al)2H2Si2O5(OH)4·nH2O)

Fossilized Syringopora (Piping Organ Coral) (Syringopora (Extinct Genus of Tabulate Coral)) — sedimentary

Fossilized Syringopora (Piping Organ Coral)

Syringopora (Extinct Genus of Tabulate Coral)

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

Petrified Wood (Agatized/Silicified Wood)

Silicified Wood (SiO2)

Blue Apatite (Calcium Fluorophosphate - Ca5(PO4)3F) — mineral

Blue Apatite

Calcium Fluorophosphate - Ca5(PO4)3F

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Milky Quartz (Crystalline Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Green Moss Agate (Silicon Dioxide (SiO2) with Mineral Inclusions) — sedimentary

Green Moss Agate

Silicon Dioxide (SiO2) with Mineral Inclusions

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Quartz Nodule / Agate Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Nodule / Agate Geode

Silicon Dioxide (SiO2)

Tumbled prehnite (probable) (Prehnite — Ca₂Al(AlSi₃O₁₀)(OH)₂) — mineral

Tumbled prehnite (probable)

Prehnite — Ca₂Al(AlSi₃O₁₀)(OH)₂

Yellow jasper or polished yellow chalcedony (Microcrystalline quartz, SiO₂, likely iron-stained jasper/chalcedony) — mineral

Yellow jasper or polished yellow chalcedony

Microcrystalline quartz, SiO₂, likely iron-stained jasper/chalcedony

Brown Chalcedony (Agate/Jasper) (Cryptocrystalline Quartz (SiO2)) — mineral

Brown Chalcedony (Agate/Jasper)

Cryptocrystalline Quartz (SiO2)

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

Chalcedony (Botryoidal Agate)

Silicon Dioxide (SiO2)

Tree Agate (Silicon Dioxide (SiO2) with inclusions of manganese and iron oxides) — mineral

Tree Agate

Silicon Dioxide (SiO2) with inclusions of manganese and iron oxides

Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon Dioxide (SiO2) with impurities

Garnet-bearing Schist (Almandine Garnet [Fe3Al2(SiO4)3] in Micaceous Schist) — metamorphic

Garnet-bearing Schist

Almandine Garnet [Fe3Al2(SiO4)3] in Micaceous Schist

Moss Agate (Chalcedony (SiO2) with inclusions of manganese or iron oxides) — mineral

Moss Agate

Chalcedony (SiO2) with inclusions of manganese or iron oxides

Chert / Chalcedony (Silicon Dioxide (SiO2)) — sedimentary

Chert / Chalcedony

Silicon Dioxide (SiO2)