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

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Green Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Dalmation Stone (Dalmation Jasper) (Peralkaline Rock with Feldspar and Arfvedsonite) — igneous

Dalmation Stone (Dalmation Jasper)

Peralkaline Rock with Feldspar and Arfvedsonite

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Tumbled agate (likely Botswana or fortification agate) (Microcrystalline quartz, SiO₂ (chalcedony with banded impurities)) — mineral

Tumbled agate (likely Botswana or fortification agate)

Microcrystalline quartz, SiO₂ (chalcedony with banded impurities)

Thunder Egg (Agate Core) (Cryptocrystalline Quartz (SiO2) in Rhyolite/Perlite Matrix) — mineral

Thunder Egg (Agate Core)

Cryptocrystalline Quartz (SiO2) in Rhyolite/Perlite Matrix

Red Agate / Carnelian (Silicon Dioxide (SiO2)) — mineral

Red Agate / Carnelian

Silicon Dioxide (SiO2)

Black Onyx (Silicon Dioxide (SiO2)) — mineral

Black Onyx

Silicon Dioxide (SiO2)

Banded Agate (Cryptocrystalline Quartz (SiO2) with iron oxide inclusions) — mineral

Banded Agate

Cryptocrystalline Quartz (SiO2) with iron oxide inclusions

Lake Superior Agate (Silicon Dioxide (SiO2) with iron impurities) — mineral

Lake Superior Agate

Silicon Dioxide (SiO2) with iron impurities

Agate (Lace Agate Geode Slice) (Silicon Dioxide (SiO2)) — mineral

Agate (Lace Agate Geode Slice)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (primarily SiO2)) — mineral

Petrified Wood

Silicified Wood (primarily SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Tumbled Quartz (Silicon Dioxide (SiO2)) — mineral

Tumbled Quartz

Silicon Dioxide (SiO2)

Talc Schist / Soapstone (Talc (Mg3Si4O10(OH)2)) — metamorphic

Talc Schist / Soapstone

Talc (Mg3Si4O10(OH)2)

African Turquoise (Jasper) (Silicon Dioxide (SiO2) - Macro-crystalline Quartz with inclusions) — sedimentary

African Turquoise (Jasper)

Silicon Dioxide (SiO2) - Macro-crystalline Quartz with inclusions

Green Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Green Calcite

Calcite (Calcium Carbonate, CaCO3)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Sandstone (Arenite (SiO2 variety)) — sedimentary

Sandstone

Arenite (SiO2 variety)

Amazonite (Potassium Aluminum Silicate (KAlSi3O8)) — mineral

Amazonite

Potassium Aluminum Silicate (KAlSi3O8)

Green Quartz / Chrysoprase / Sea Glass (Silicon Dioxide (SiO2)) — mineral

Green Quartz / Chrysoprase / Sea Glass

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Green Aventurine (Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions) — mineral

Green Aventurine

Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

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

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Seraphinite (Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8) — mineral

Seraphinite

Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)