Rock Identifier

Category

Mineral, Jewelry

Browse mineral, jewelry specimens identified by the Rock Identifier community.

Learn about Mineral, Jewelry in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Dolomite

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Garnet in Schist or Pegmatite (Almandine Garnet (Fe3Al2(SiO4)3) in host rock) — metamorphic

Garnet in Schist or Pegmatite

Almandine Garnet (Fe3Al2(SiO4)3) in host rock

Agate (Silicon Dioxide (SiO2), microcrystalline variety of quartz) — sedimentary

Agate

Silicon Dioxide (SiO2), microcrystalline variety of quartz

Apache Tear (Obsidian (Natural volcanic glass)) — igneous

Apache Tear

Obsidian (Natural volcanic glass)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Hematoid Quartz (Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)) — mineral

Hematoid Quartz

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Quartz (Agate/Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Agate/Chalcedony)

Silicon Dioxide (SiO2)

Fulgurite (Lechatelierite (vitreous silica)) — mineral

Fulgurite

Lechatelierite (vitreous silica)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Common Opal (Hydrated amorphous silica (SiO2·nH2O)) — mineral

Common Opal

Hydrated amorphous silica (SiO2·nH2O)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Septarian Nodule (Septarian Concretion (Calcite, Aragonite, Limestone, and Barite)) — sedimentary

Septarian Nodule

Septarian Concretion (Calcite, Aragonite, Limestone, and Barite)

Amethyst Geode (Quartz (SiO2, variety Amethyst)) — mineral

Amethyst Geode

Quartz (SiO2, variety Amethyst)

Libyan Desert Glass (Libyan Desert Glass (Tektite / Impact Glass)) — meteorite

Libyan Desert Glass

Libyan Desert Glass (Tektite / Impact Glass)

Quartz Crystal (Rough) (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal (Rough)

Silicon Dioxide (SiO2)

Rainbow Moonstone (White Labradorite (var. of Anorthite), (Ca,Na)(Al,Si)4O8) — mineral

Rainbow Moonstone

White Labradorite (var. of Anorthite), (Ca,Na)(Al,Si)4O8

Rough Emerald (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — gemstone

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Prehnite (Prehnite - Ca2Al(AlSi3O10)(OH)2) — mineral

Prehnite

Prehnite - Ca2Al(AlSi3O10)(OH)2

Tiger's Eye (Pseudomorph of quartz after crocidolite (SiO2)) — metamorphic

Tiger's Eye

Pseudomorph of quartz after crocidolite (SiO2)

Amethyst (Amethyst (Silicon Dioxide, SiO2 + Fe4+)) — mineral

Amethyst

Amethyst (Silicon Dioxide, SiO2 + Fe4+)

Labradorite (Labradorite ((Ca, Na)(Al, Si)4O8)) — mineral

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Larimar (Blue Pectolite (NaCa2Si3O8(OH))) — mineral

Larimar

Blue Pectolite (NaCa2Si3O8(OH))

Jasper Rose Quarts / Ferruginous Quartz (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary

Jasper Rose Quarts / Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite inclusions

Amethyst (Tumbled) (Amethyst (SiO2 with iron impurities)) — mineral

Amethyst (Tumbled)

Amethyst (SiO2 with iron impurities)

Petrified Wood Agate (Silicified Wood (primarily SiO2)) — fossil

Petrified Wood Agate

Silicified Wood (primarily SiO2)

Emerald in Matrix (Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities) — mineral

Emerald in Matrix

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Amethyst (Silicon dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon dioxide (SiO2) with iron impurities

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Citrine (Heat-Treated) (Silicon Dioxide (SiO2)) — mineral

Citrine (Heat-Treated)

Silicon Dioxide (SiO2)

Green Quartz (Prasiolite) (Crystalline Silicon Dioxide (SiO2)) — mineral

Green Quartz (Prasiolite)

Crystalline Silicon Dioxide (SiO2)

Amethyst Cluster (Silicon Dioxide with Iron impurities (SiO2)) — mineral

Amethyst Cluster

Silicon Dioxide with Iron impurities (SiO2)

Aventurine Quartz (Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — mineral

Aventurine Quartz

Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Amazonite (Amazonite (Microcline variant: KAlSi3O8)) — mineral

Amazonite

Amazonite (Microcline variant: KAlSi3O8)

Bloodstone (Heliotrope) (Silicon Dioxide (SiO2) with Hematite inclusions) — mineral

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with Hematite inclusions

Banded Agate (Lake Superior Agate style) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (Lake Superior Agate style)

Silicon Dioxide (SiO2)

Rainbow Moonstone (White Labradorite (Plagioclase Feldspar), (Na,Ca)(Al,Si)4O8) — gemstone

Rainbow Moonstone

White Labradorite (Plagioclase Feldspar), (Na,Ca)(Al,Si)4O8

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

Amethyst Cluster

Silicon Dioxide (SiO2) with iron impurities