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

Epidote (Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — mineral

Epidote

Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Jasper and Chalcedony Nodule (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper and Chalcedony Nodule

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Amethyst on Basalt Matrix (Crystalline Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst on Basalt Matrix

Crystalline Silicon Dioxide (SiO2) with iron impurities

Moss Agate (Silicon Dioxide (SiO2) with Manganese or Iron Oxide inclusions) — mineral

Moss Agate

Silicon Dioxide (SiO2) with Manganese or Iron Oxide inclusions

Red-and-cream jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides) — mineral

Red-and-cream jasper

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

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Larimar (Pectolite (a blue variety of Pectolite)) — Mineral

Larimar

Pectolite (a blue variety of Pectolite)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Polished orbicular jasper (likely ocean jasper) (Silicified microcrystalline quartz/chalcedony with iron-oxide-rich orbicules; commonly called Ocean Jasper) — mineral

Polished orbicular jasper (likely ocean jasper)

Silicified microcrystalline quartz/chalcedony with iron-oxide-rich orbicules; commonly called Ocean Jasper

Beach Pebble (likely Quartz or Chalcedony) (Silicon Dioxide (SiO2)) — Mineral

Beach Pebble (likely Quartz or Chalcedony)

Silicon Dioxide (SiO2)

Red Jasper (Red Jasper (SiO2 with Fe2O3 impurities)) — sedimentary

Red Jasper

Red Jasper (SiO2 with Fe2O3 impurities)

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

Milky Quartz Beads

SiO2 (Silicon Dioxide)

Blue Sapphire and Diamond (Set in Metal) (Corundum (Al2O3) and Diamond (C)) — mineral

Blue Sapphire and Diamond (Set in Metal)

Corundum (Al2O3) and Diamond (C)

Lake Superior Agate (Silicon Dioxide (Chalcedony / Quartz)) — gemstone

Lake Superior Agate

Silicon Dioxide (Chalcedony / Quartz)

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

Agate

Silicon Dioxide (Chalcedony), SiO2

White quartz pebble (likely milky quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

White quartz pebble (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Chalcedony Nodule / Agate (Silicon Dioxide (SiO2)) — sedimentary

Chalcedony Nodule / Agate

Silicon Dioxide (SiO2)

Peach Moonstone (Orthoclase Feldspar (KAlSi3O8)) — mineral

Peach Moonstone

Orthoclase Feldspar (KAlSi3O8)

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)

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

Agate / Chalcedony Geode

Silicon Dioxide (SiO2)

Crazy Lace Agate (Chalcedony (SiO2) with microcrystalline quartz) — sedimentary

Crazy Lace Agate

Chalcedony (SiO2) with microcrystalline quartz

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Chalcedony Agate Geode / Nodule (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Chalcedony Agate Geode / Nodule

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Smoky Quartz (SiO2 (Silicon Dioxide)) — Mineral

Smoky Quartz

SiO2 (Silicon Dioxide)

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

Selenite (Satin Spar)

Gypsum (CaSO4·2H2O)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — gemstone

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Moss Agate (Silicon Dioxide with inclusions (SiO2 + Mn/Fe oxides)) — mineral

Moss Agate

Silicon Dioxide with inclusions (SiO2 + Mn/Fe oxides)

Amethyst (Geode) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (Geode)

Silicon Dioxide (SiO2) with iron impurities

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

Black Jasper

Silicon Dioxide (SiO2) with impurities

Quartz (Pink / Ferruginous) (Silicon Dioxide (SiO2)) — mineral

Quartz (Pink / Ferruginous)

Silicon Dioxide (SiO2)

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

Pyrite (Fool's Gold) in Matrix

Iron Disulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

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

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Green Apophyllite and Stilbite on Quartz Cluster (Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)) — Mineral

Green Apophyllite and Stilbite on Quartz Cluster

Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)

Yellow Sapphire (Corundum (Al2O3)) — gemstone

Yellow Sapphire

Corundum (Al2O3)

Granite (Granite) — igneous

Granite

Granite

Green Aventurine (SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)) — mineral

Green Aventurine

SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)

Fuchsite or Green Mica Schist (K(Al,Cr)2(AlSi3O10)(OH)2) — metamorphic

Fuchsite or Green Mica Schist

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

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

Fuchsite

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

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities