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

Chalcedony (Agate/Carnelian-like) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Carnelian-like)

Silicon Dioxide (SiO2)

Carnelian Agate (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) with iron oxide inclusions

Carnelian Agate (Silicon Dioxide (SiO2)) — mineral

Carnelian Agate

Silicon Dioxide (SiO2)

Chalcedony in Limestone Host Rock (Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)) — Mineral within Sedimentary Rock

Chalcedony in Limestone Host Rock

Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)

Mineral within Sedimentary Rock

Blue Topaz (Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)) — gemstone

Blue Topaz

Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)

Quartz (Clear to Smokey) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear to Smokey)

Silicon Dioxide (SiO2)

Satin Spar Selenite (Gypsum (CaSO4·2H2O)) — mineral

Satin Spar Selenite

Gypsum (CaSO4·2H2O)

Jasper (Cryptocrystalline quartz (SiO2)) — Sedimentary/Mineral

Jasper

Cryptocrystalline quartz (SiO2)

Sedimentary/Mineral

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Moss Agate (Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide) — mineral

Moss Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide

Petrified Wood (Silicified wood (Quartz/Chalcedony/SiO2)) — sedimentary

Petrified Wood

Silicified wood (Quartz/Chalcedony/SiO2)

Quartz (Druzy or Chalcedony variant) (Silicon Dioxide (SiO2)) — mineral

Quartz (Druzy or Chalcedony variant)

Silicon Dioxide (SiO2)

Zebra Jasper (Silicified sedimentary rock (SiO2) with mineral inclusions) — sedimentary

Zebra Jasper

Silicified sedimentary rock (SiO2) with mineral inclusions

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Red Jasper and Hematite (Silicon Dioxide (SiO2) and Iron Oxide (Fe2O3)) — mineral

Red Jasper and Hematite

Silicon Dioxide (SiO2) and Iron Oxide (Fe2O3)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Fuchsite (Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Fuchsite

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Pyrite (Fools Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fools Gold)

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions (SiO2)) — sedimentary

Dendritic Agate

Silicon Dioxide with Manganese or Iron Oxide inclusions (SiO2)

Shale (Argillite / Shaly Mudstone) — sedimentary

Shale

Argillite / Shaly Mudstone

Zebra Jasper (Tumbled Opaque Chalcedony (SiO2)) — sedimentary

Zebra Jasper

Tumbled Opaque Chalcedony (SiO2)

Agate Geode (Silicon Dioxide (Chalcedony/Quartz), SiO2) — sedimentary

Agate Geode

Silicon Dioxide (Chalcedony/Quartz), SiO2

Lake Superior Agate (Silicon Dioxide (Chalcedony / Quartz, SiO2)) — sedimentary

Lake Superior Agate

Silicon Dioxide (Chalcedony / Quartz, SiO2)

Dalmation Stone (frequently called Dalmatian Jasper) (Peralkaline Quartz-Feldspar Rock) — igneous

Dalmation Stone (frequently called Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock

Mixed rock and mineral specimen collection (Multiple species, likely quartz (SiO₂), calcite (CaCO₃), feldspar, chert, and assorted volcanic/sedimentary rocks) — mineral

Mixed rock and mineral specimen collection

Multiple species, likely quartz (SiO₂), calcite (CaCO₃), feldspar, chert, and assorted volcanic/sedimentary rocks

Polished blue agate/geode slice (Chalcedony (microcrystalline quartz, SiO₂), likely dyed blue) — mineral

Polished blue agate/geode slice

Chalcedony (microcrystalline quartz, SiO₂), likely dyed blue

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

Chalcedony (Common Agate)

Silicon Dioxide (SiO2)

Chalcedony (Agate/Chert) (Microcrystalline Quartz (SiO2)) — mineral

Chalcedony (Agate/Chert)

Microcrystalline Quartz (SiO2)

Banded Calcite (Mexican Onyx) (Calcium Carbonate (CaCO3)) — mineral

Banded Calcite (Mexican Onyx)

Calcium Carbonate (CaCO3)

Crazy Lace Agate (Silicon Dioxide (Microcrystalline Quartz) - SiO2) — mineral

Crazy Lace Agate

Silicon Dioxide (Microcrystalline Quartz) - SiO2

Jasper Agate (Silicon dioxide (SiO2)) — mineral

Jasper Agate

Silicon dioxide (SiO2)

Banded Calcite (often commercially called Mexican Onyx) (Calcite (Calcium Carbonate, CaCO3)) — mineral

Banded Calcite (often commercially called Mexican Onyx)

Calcite (Calcium Carbonate, CaCO3)

Petrified Wood (Silicified Wood (primarily quartz/chalcedony replacing organic wood structure, SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily quartz/chalcedony replacing organic wood structure, SiO2)

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

Chert / Chalcedony

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Cobaltian Calcite (Cobalt-bearing Calcite (Ca,Co)CO3) — mineral

Cobaltian Calcite

Cobalt-bearing Calcite (Ca,Co)CO3

Agate Geode with Quartz (Silicon Dioxide (SiO2)) — mineral

Agate Geode with Quartz

Silicon Dioxide (SiO2)

Yellow chalcedony (likely heat-treated or resin-coated) (Microcrystalline quartz, SiO₂) — mineral

Yellow chalcedony (likely heat-treated or resin-coated)

Microcrystalline quartz, SiO₂

Amethyst and Agate Geode Section (Silicon Dioxide (SiO2) - Crystalline Quartz and Chalcedony) — mineral

Amethyst and Agate Geode Section

Silicon Dioxide (SiO2) - Crystalline Quartz and Chalcedony