Rock Identifier

Category

Mineralological Variety

Browse mineralological variety specimens identified by the Rock Identifier community.

Learn about Mineralological Variety in the encyclopedia

Albite

Flame Obsidian

Lace Obsidian

Oligoclase

Brookite

Sodalite

Syenite

Microcline

Leopard Obsidian

Orthoclase

Starry Night Obsidian

Pumpkin Obsidian

Pumpkin Obsidian

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Pyrite (Fool's Gold)

Iron Pyrite (FeS2)

Quartz (Milky / Clear Quartz Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky / Clear Quartz Fragment)

Silicon Dioxide (SiO2)

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

Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Pyrite (Iron sulfide (FeS2)) — mineral

Pyrite

Iron sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

White Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Iceland Spar (Optical Calcite) (Calcite (Calcium Carbonate, CaCO3)) — mineral

Iceland Spar (Optical Calcite)

Calcite (Calcium Carbonate, CaCO3)

Quartz or possibly Jasper/Chert. Looks like a tumbled or water-worn stone. (SiO2 (Silicon Dioxide)) — Mineral or Sedimentary (if chert)

Quartz or possibly Jasper/Chert. Looks like a tumbled or water-worn stone.

SiO2 (Silicon Dioxide)

Mineral or Sedimentary (if chert)

Sapphire (Corundum (Al2O3)) — gemstone

Sapphire

Corundum (Al2O3)

Aquamarine bead bracelet (Beryl, Be₃Al₂Si₆O₁₈; blue color is typically caused by trace iron) — gemstone

Aquamarine bead bracelet

Beryl, Be₃Al₂Si₆O₁₈; blue color is typically caused by trace iron

Chalcedony (likely agate) (Microcrystalline quartz, SiO₂; agate is banded chalcedony) — mineral

Chalcedony (likely agate)

Microcrystalline quartz, SiO₂; agate is banded chalcedony

Polished agate (likely chalcedony) (Microcrystalline quartz, SiO₂; agate is banded chalcedony) — mineral

Polished agate (likely chalcedony)

Microcrystalline quartz, SiO₂; agate is banded chalcedony

Faceted yellow-brown gemstone ring, likely citrine (Citrine (iron-bearing quartz, SiO₂); identification from the photo is uncertain) — gemstone

Faceted yellow-brown gemstone ring, likely citrine

Citrine (iron-bearing quartz, SiO₂); identification from the photo is uncertain

Massive blue-green rough specimen, likely aquamarine (beryl) (Beryl, Be₃Al₂Si₆O₁₈ (tentative identification)) — mineral

Massive blue-green rough specimen, likely aquamarine (beryl)

Beryl, Be₃Al₂Si₆O₁₈ (tentative identification)

Polished carnelian agate (Chalcedony, microcrystalline quartz (SiO₂), colored mainly by iron oxides) — gemstone

Polished carnelian agate

Chalcedony, microcrystalline quartz (SiO₂), colored mainly by iron oxides

Amethyst (rough crystal) (Quartz, SiO₂; purple color commonly caused by iron impurities and natural irradiation) — mineral

Amethyst (rough crystal)

Quartz, SiO₂; purple color commonly caused by iron impurities and natural irradiation

Jasper / Quartzite (SiO2) — sedimentary/metamorphic

Jasper / Quartzite

SiO2

sedimentary/metamorphic

Yellow Jasper (SiO2) — mineral

Yellow Jasper

SiO2

Jasper / Chert (river tumbled) (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper / Chert (river tumbled)

Microcrystalline Quartz (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with hematite inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with hematite inclusions

Banded Jasper / Yellow Jasper with Chlorite or Epidote inclusions (Silicon Dioxide (SiO2) with iron oxide and silicate impurities) — sedimentary

Banded Jasper / Yellow Jasper with Chlorite or Epidote inclusions

Silicon Dioxide (SiO2) with iron oxide and silicate impurities

Jasper or Chert pebble (SiO2 (Silicon Dioxide)) — sedimentary

Jasper or Chert pebble

SiO2 (Silicon Dioxide)

Brecciated jasper/chert (Microcrystalline quartz (SiO₂), with iron-oxide and clay inclusions) — sedimentary

Brecciated jasper/chert

Microcrystalline quartz (SiO₂), with iron-oxide and clay inclusions

Mixed Rock and Mineral Collection (Various geological specimens) — igneous, sedimentary, and metamorphic

Mixed Rock and Mineral Collection

Various geological specimens

igneous, sedimentary, and metamorphic

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

Agate

Silicon dioxide (Chalcedony), SiO2

Agate (Silicon dioxide (Chalcedony), SiO2) — gemstone

Agate

Silicon dioxide (Chalcedony), SiO2

Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Carnelian (Silicon dioxide (SiO2) with Iron Oxide impurities) — mineral

Carnelian

Silicon dioxide (SiO2) with Iron Oxide impurities

Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) with iron inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Tumbled chalcedony pendant (likely agate) (Chalcedony, microcrystalline quartz (SiO₂); the pale bands suggest agate) — gemstone

Tumbled chalcedony pendant (likely agate)

Chalcedony, microcrystalline quartz (SiO₂); the pale bands suggest agate