Rock Identifier

Category

Mineralogical Specimen

Browse mineralogical specimen specimens identified by the Rock Identifier community.

Learn about Mineralogical Specimen in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Morganite Crystal

Morganite Crystal

Aquamarine Matrix

Aquamarine Matrix

Emerald Crystal

Emerald Crystal

Aquamarine Crystal

Aquamarine Crystal

Mushroom Tourmaline

Mushroom Tourmaline

White Beryl

Smoky Quartz

Clear Obsidian

Goshenite Crystal

Goshenite Crystal

Magnetite

Crocoite

Amazonite (Microcline (KAlSi3O8)) — mineral

Amazonite

Microcline (KAlSi3O8)

Limonite Nugget (Limonite (Hydrated iron oxide-hydroxide, FeO(OH)·nH2O)) — mineral

Limonite Nugget

Limonite (Hydrated iron oxide-hydroxide, FeO(OH)·nH2O)

White Salt Crystal Lamp (Halite) (Halite (Sodium Chloride, NaCl)) — mineral

White Salt Crystal Lamp (Halite)

Halite (Sodium Chloride, NaCl)

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

Quartz Geode Cluster (Iron-stained Quartz)

Silicon Dioxide (SiO2)

Granite Pebble (Pegmatitic Quartz-Feldspar River Rock) (Granite / Quartz-Feldspar-Mica Aggregate) — igneous

Granite Pebble (Pegmatitic Quartz-Feldspar River Rock)

Granite / Quartz-Feldspar-Mica Aggregate

Smoky Quartz with Inclusions (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz with Inclusions

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Amethyst (Rough Quartz) (Silicon Dioxide (SiO2 with Iron impurities)) — mineral

Amethyst (Rough Quartz)

Silicon Dioxide (SiO2 with Iron impurities)

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

Quartz (Milky or Druzy Quartz)

Silicon Dioxide (SiO2)

Ruby in Zoisite (Anyolite) — metamorphic

Ruby in Zoisite

Anyolite

Kunzite (Spodumene (LiAlSi2O6)) — mineral

Kunzite

Spodumene (LiAlSi2O6)

Tumbled Agate (Silicon Dioxide (Chalcedony variety), SiO2) — gemstone

Tumbled Agate

Silicon Dioxide (Chalcedony variety), SiO2

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Bauxite (Aluminium ore / Hydrated aluminium oxides (AlOx(OH)3-2x)) — sedimentary

Bauxite

Aluminium ore / Hydrated aluminium oxides (AlOx(OH)3-2x)

Quartzite (Quartzite (composed primarily of Quartz, SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of Quartz, SiO2)

Chert (and Jasper) Nodules in Limestone (Silicon Dioxide (SiO2) microcrystalline quartz) — sedimentary

Chert (and Jasper) Nodules in Limestone

Silicon Dioxide (SiO2) microcrystalline quartz

Quartz Geode with Agate (Silicon Dioxide (SiO2)) — mineral

Quartz Geode with Agate

Silicon Dioxide (SiO2)

Jasper (Chert / Chalcedony) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Jasper (Chert / Chalcedony)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Yellow Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Yellow Quartzite Pebble

Quartzite (primarily SiO2)

Limestone Pebble (Limestone (CaCO3)) — sedimentary

Limestone Pebble

Limestone (CaCO3)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebble

Quartzite (primarily SiO2)

Red Jasper with Quartz Veins (SiO2 (Silicon Dioxide with Iron Oxide inclusions)) — sedimentary

Red Jasper with Quartz Veins

SiO2 (Silicon Dioxide with Iron Oxide inclusions)

Jasper (Silicon Dioxide (SiO2)) — mineral

Jasper

Silicon Dioxide (SiO2)

Red Jasper or Ironstone concretion (SiO2 or Fe2O3) — sedimentary or mineral

Red Jasper or Ironstone concretion

SiO2 or Fe2O3

sedimentary or mineral

Quartz Druzy on Matrix (SiO2) — mineral

Quartz Druzy on Matrix

SiO2

Banded Agate / Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate / Chalcedony

Cryptocrystalline Quartz (SiO2)

Granite (Granite) — igneous

Granite

Granite

Unakite (Metamorphosed Granite (Orthoclase, Epidote, Quartz)) — metamorphic

Unakite

Metamorphosed Granite (Orthoclase, Epidote, Quartz)

Lepidolite in Quartz (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 / SiO2) — mineral

Lepidolite in Quartz

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 / SiO2

Chert (Yellow Jasper variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Yellow Jasper variant)

Silicon Dioxide (SiO2)

Basalt (Vesicular) (Vesicular Basalt) — igneous

Basalt (Vesicular)

Vesicular Basalt

Chert (often called Flint or Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Microcrystalline Quartz (SiO2)

Banded Agate (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Banded Agate

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Mica Schist with Quartz (Schist containing Muscovite and Quartz) — metamorphic

Mica Schist with Quartz

Schist containing Muscovite and Quartz

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite River Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite River Pebble

Metamorphic Quartzite (SiO2)

Amethyst Geode (Amethyst (Silicon Dioxide with Iron impurities, SiO2)) — mineral

Amethyst Geode

Amethyst (Silicon Dioxide with Iron impurities, SiO2)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Diorite (Phaneritic intermediate plutonic rock) — igneous

Diorite

Phaneritic intermediate plutonic rock