Rock Identifier

Category

Not A Geological Specimen

Browse not a geological specimen specimens identified by the Rock Identifier community.

Learn about Not A Geological Specimen in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Morganite Crystal

Morganite Crystal

Aquamarine Matrix

Aquamarine Matrix

Emerald Crystal

Emerald Crystal

Mushroom Tourmaline

Mushroom Tourmaline

Aquamarine Crystal

Aquamarine Crystal

Smoky Quartz

Smoky Quartz

Clear Obsidian

Clear Obsidian

Goshenite Crystal

Goshenite Crystal

Magnetite

Magnetite

Crocoite

Crocoite

Transvaal Jade

Transvaal Jade

Jasper with Hematite (Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)) — sedimentary

Jasper with Hematite

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)

Kyanite in Quartz (Al2SiO5 in SiO2) — metamorphic

Kyanite in Quartz

Al2SiO5 in SiO2

Ferruginous Quartz (Quartz with Iron Oxide inclusions (SiO2 + Fe2O3)) — mineral

Ferruginous Quartz

Quartz with Iron Oxide inclusions (SiO2 + Fe2O3)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Orange Quartz / Quartzite (Silicon Dioxide (SiO2) with iron oxide inclusions) — metamorphic

Orange Quartz / Quartzite

Silicon Dioxide (SiO2) with iron oxide inclusions

Thulite in Matrix (Pink Zoisite - Ca2Al3(SiO4)3(OH)) — metamorphic

Thulite in Matrix

Pink Zoisite - Ca2Al3(SiO4)3(OH)

Chalcedony (Agate/Carnelian pebbles) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Agate/Carnelian pebbles)

Cryptocrystalline Quartz (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Gold Nugget Cluster (Native Gold (Au)) — mineral

Gold Nugget Cluster

Native Gold (Au)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

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

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Blue Quartz (Quartz (Silicon Dioxide) with inclusions, SiO2) — mineral

Blue Quartz

Quartz (Silicon Dioxide) with inclusions, SiO2

Pink Spinel (Magnesium Aluminum Oxide (MgAl2O4)) — gemstone

Pink Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Amazonite (Microcline (KAlSi3O8)) — mineral

Amazonite

Microcline (KAlSi3O8)

Tanzanite (Rough) (Blue Zoisite (Ca2Al3(SiO4)3(OH))) — mineral

Tanzanite (Rough)

Blue Zoisite (Ca2Al3(SiO4)3(OH))

Quartz (Crystalline Silicon Dioxide (SiO2)) — mineral

Quartz

Crystalline Silicon Dioxide (SiO2)

Peacock Ore (Bornite (Cu5FeS4) or Chalcopyrite treated with acid) — mineral

Peacock Ore

Bornite (Cu5FeS4) or Chalcopyrite treated with acid

Chert (with Limestone matrix) (Silicon dioxide (SiO2)) — sedimentary

Chert (with Limestone matrix)

Silicon dioxide (SiO2)

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

Amethyst (Geode Fragment)

Silicon Dioxide with iron impurities (SiO2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Charoite (Charoite, K(Ca,Na)2Si4O10(OH,F)·H2O) — metamorphic

Charoite

Charoite, K(Ca,Na)2Si4O10(OH,F)·H2O

Chalcedony (Yellow Agate) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Yellow Agate)

Cryptocrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Vanadinite on Matrix (Vanadinite (Pb5(VO4)3Cl)) — mineral

Vanadinite on Matrix

Vanadinite (Pb5(VO4)3Cl)

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

Petrified Wood

Silicified Wood (primarily SiO2)

Pink Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Pink Opal

Hydrated Silica (SiO2·nH2O)

Tektite (Indochinite) (Tektite (Amorphous Meteoritic Glass)) — igneous

Tektite (Indochinite)

Tektite (Amorphous Meteoritic Glass)

Yellow Jasper (Jasper (Silica-rich Microcrystalline Quartz, SiO2 with Iron impurities)) — sedimentary

Yellow Jasper

Jasper (Silica-rich Microcrystalline Quartz, SiO2 with Iron impurities)

Fossiliferous Limestone (with Crinoids/Coral) (Fossiliferous Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone (with Crinoids/Coral)

Fossiliferous Limestone (CaCO3)

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

Labradorite

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

Copper Nugget (Native Copper (Cu)) — mineral

Copper Nugget

Native Copper (Cu)

Moldavite (Tektite (Impact Glass), ~80% SiO2 + Al2O3) — tektite

Moldavite

Tektite (Impact Glass), ~80% SiO2 + Al2O3

Titanium Aura Quartz (Bismuth-coated Druzy) (Silicon Dioxide (SiO2) with Titanium/Metal vapor coating) — mineral

Titanium Aura Quartz (Bismuth-coated Druzy)

Silicon Dioxide (SiO2) with Titanium/Metal vapor coating

Graphic Granite (Pegmatitic Granite (Quartz and Microcline KAlSi3O8)) — igneous

Graphic Granite

Pegmatitic Granite (Quartz and Microcline KAlSi3O8)

Blue Quartz (Dumortierite Quartz) (Silicon Dioxide with Aluminum Borosilicate (SiO2 + AlAl6BSi3O18)) — metamorphic

Blue Quartz (Dumortierite Quartz)

Silicon Dioxide with Aluminum Borosilicate (SiO2 + AlAl6BSi3O18)

Amethyst (Silicon Dioxide (SiO2) with trace Iron (Fe3+)) — mineral

Amethyst

Silicon Dioxide (SiO2) with trace Iron (Fe3+)

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

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

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

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Amethyst (Tumbled/Water-worn) (Silicon Dioxide (SiO2)) — mineral

Amethyst (Tumbled/Water-worn)

Silicon Dioxide (SiO2)