Rock Identifier

Category

Mineral (Variety Of Chalcedony)

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

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

Milky Quartz (Tumbled)

Quartz (Silicon Dioxide, SiO2)

Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2

Diamond (Diamond (Pure Carbon, C)) — mineral

Diamond

Diamond (Pure Carbon, C)

Stichtite in Serpentine (Atlantasite) (Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)) — Metamorphic rock / Mineral variety

Stichtite in Serpentine (Atlantasite)

Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)

Metamorphic rock / Mineral variety

Chert (and Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (and Flint)

Silicon Dioxide (SiO2)

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

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

Rose Quartz (Silicon Dioxide (SiO2) with trace elements of Titanium, Iron, or Manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace elements of Titanium, Iron, or Manganese

Eagle Eye Stone (Green Tiger's Eye) (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)) — mineral

Eagle Eye Stone (Green Tiger's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Almandine Garnet (Almandine (Fe3Al2Si3O12)) — mineral

Almandine Garnet

Almandine (Fe3Al2Si3O12)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Chevron Amethyst (Crystalline Silicon Dioxide with Iron impurities (SiO2)) — mineral

Chevron Amethyst

Crystalline Silicon Dioxide with Iron impurities (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2) with trace aluminum and irradiation) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with trace aluminum and irradiation

Chert (Nodular) (Chert (SiO2 - Microcrystalline Quartz)) — sedimentary

Chert (Nodular)

Chert (SiO2 - Microcrystalline Quartz)

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

Quartz (Milky/Crystalline variety)

Silicon Dioxide (SiO2)

Chert (or possibly Flint) (SiO2 (Silicon Dioxide)) — Sedimentary Rock

Chert (or possibly Flint)

SiO2 (Silicon Dioxide)

Sedimentary Rock

Travertine (Tufa) (Calcium Carbonate (CaCO3)) — sedimentary

Travertine (Tufa)

Calcium Carbonate (CaCO3)

Amazonite (Amazonite (KAlSi3O8)) — mineral

Amazonite

Amazonite (KAlSi3O8)

Moonstone (Orthoclase Feldspar (specifically showing adularescence)) — Mineral

Moonstone

Orthoclase Feldspar (specifically showing adularescence)

Pink Feldspar (Orthoclase Feldspar (KAlSi3O8)) — mineral

Pink Feldspar

Orthoclase Feldspar (KAlSi3O8)

Granite (Granite) — Igneous

Granite

Granite

Chert (Tripolitic Chert / Flint Nodules) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Tripolitic Chert / Flint Nodules)

Microcrystalline Quartz (SiO2)

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

Rose Quartz

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

Quartz (Quartz (Silicon Dioxide - SiO2)) — Mineral

Quartz

Quartz (Silicon Dioxide - SiO2)

Jade (likely Nephrite or Jadeite) (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)) — Mineral

Jade (likely Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)

Banded Chert (Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Cryptocrystalline Quartz (SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Sandstone (Graywacke) (Clastic Sedimentary Rock (Lithic Sandstone)) — sedimentary

Sandstone (Graywacke)

Clastic Sedimentary Rock (Lithic Sandstone)

Conglomerate (Clastic Sedimentary Conglomerate (SiO2, CaCO3, etc.)) — sedimentary

Conglomerate

Clastic Sedimentary Conglomerate (SiO2, CaCO3, etc.)

Red Jasper (Jasper (a cryptocrystalline variety of Quartz, SiO₂)) — Sedimentary Rock

Red Jasper

Jasper (a cryptocrystalline variety of Quartz, SiO₂)

Sedimentary Rock

Granite (Plutonic felsic rock (Quartz, Feldspar, Mica)) — igneous

Granite

Plutonic felsic rock (Quartz, Feldspar, Mica)

Obsidian (Obsidian (principally SiO2)) — igneous

Obsidian

Obsidian (principally SiO2)

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Red Garnet (Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)) — Mineral

Red Garnet

Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)

Banded Agate (Agate (Cryptocrystalline Quartz, SiO2)) — mineral

Banded Agate

Agate (Cryptocrystalline Quartz, SiO2)

Smoky Quartz on Feldspar (Granite Pegmatite) (Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)) — igneous

Smoky Quartz on Feldspar (Granite Pegmatite)

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)

Banded Agate (Crazy Lace/Mexican Agate Variety) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (Crazy Lace/Mexican Agate Variety)

Silicon Dioxide (SiO2)

Amethyst (Chevron Amethyst) (Amethystine Quartz (SiO2)) — mineral

Amethyst (Chevron Amethyst)

Amethystine Quartz (SiO2)

Chert Conglomerate (or Breccia) (Sedimentary Clastic Rock (variety: Ferruginous Chert Breccia)) — sedimentary

Chert Conglomerate (or Breccia)

Sedimentary Clastic Rock (variety: Ferruginous Chert Breccia)

Calcite (Calcite (CaCO₃, Calcium Carbonate)) — Mineral

Calcite

Calcite (CaCO₃, Calcium Carbonate)

Pyrite (Iron Pyrite (FeS2)) — mineral

Pyrite

Iron Pyrite (FeS2)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — Mineral (Variety of Quartz)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Mineral (Variety of Quartz)

Green Aventurine (Aventurine (Silicon dioxide, SiO₂)) — Mineral; variety of Quartz

Green Aventurine

Aventurine (Silicon dioxide, SiO₂)

Mineral; variety of Quartz