Rock Identifier

Category

Mineral (Man Made Glass, Not Natural)

Browse mineral (man made glass, not natural) specimens identified by the Rock Identifier community.

Learn about Mineral (Man Made Glass, Not Natural) in the encyclopedia

Opalite

Goldstone

Obsidian

Black Obsidian

Macusanite

Baddeleyite

Blue Goldstone

Green Obsidian

Blue Obsidian

Midnight Obsidian

Maskelynite

Pink Obsidian

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Faceted yellow-brown gemstone earring (Likely citrine (quartz, SiO₂), though treated quartz or synthetic glass cannot be confirmed from the image) — gemstone

Faceted yellow-brown gemstone earring

Likely citrine (quartz, SiO₂), though treated quartz or synthetic glass cannot be confirmed from the image

Dyed Pink Quartzite (Tumbled and Dyed Quartzite (SiO2 with dye treatment)) — metamorphic

Dyed Pink Quartzite

Tumbled and Dyed Quartzite (SiO2 with dye treatment)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Diorite (Gneissic) (Diorite) — igneous

Diorite (Gneissic)

Diorite

Fluorite (Rainbow Fluorite) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Rainbow Fluorite)

Calcium Fluoride (CaF2)

Obsidian (Volcanic Glass (SiO2)) — igneous

Obsidian

Volcanic Glass (SiO2)

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

Druzy Quartz

Quartz (Silicon Dioxide, SiO2)

Granite (Phaneritic Plutonic Felsic Rock) — igneous

Granite

Phaneritic Plutonic Felsic Rock

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

Green Aventurine

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

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — metamorphic

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Green Aventurine (Quartzite (Silicon Dioxide, SiO2 + Fuchsite)) — metamorphic

Green Aventurine

Quartzite (Silicon Dioxide, SiO2 + Fuchsite)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Green Aventurine (Quartzite with Fuchsite (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Green Aventurine

Quartzite with Fuchsite (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Green Aventurine (Silicon dioxide (SiO2) with inclusions of Fuchsite) — metamorphic

Green Aventurine

Silicon dioxide (SiO2) with inclusions of Fuchsite

Fulgurite (Sand-tube) (Fulgurite (Lechatelierite-rich fused sand)) — metamorphic

Fulgurite (Sand-tube)

Fulgurite (Lechatelierite-rich fused sand)

White quartzite pebble (Quartzite, composed predominantly of quartz (SiO₂)) — metamorphic

White quartzite pebble

Quartzite, composed predominantly of quartz (SiO₂)

Pink Granite (Phaneritic Felsic Intrusive Igneous Rock) — igneous

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

Vesicular Basalt (or Scoria) (Vesicular Basalt) — igneous

Vesicular Basalt (or Scoria)

Vesicular Basalt

Smoky Quartz on Matrix (Silicon Dioxide (SiO2) with trace impurities and aluminum inclusions) — mineral

Smoky Quartz on Matrix

Silicon Dioxide (SiO2) with trace impurities and aluminum inclusions

Polished brecciated jasper (Jasper, opaque microcrystalline quartz (SiO₂), with iron-oxide and other mineral inclusions) — gemstone

Polished brecciated jasper

Jasper, opaque microcrystalline quartz (SiO₂), with iron-oxide and other mineral inclusions

Sandstone (Sandstone (clastic sedimentary rock)) — sedimentary

Sandstone

Sandstone (clastic sedimentary rock)

Diamond (Carbon (C) - Native Element) — mineral

Diamond

Carbon (C) - Native Element

Yellow Quartz (Citrine Quartz or Yellow Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine Quartz or Yellow Chalcedony)

Silicon Dioxide (SiO2)

Granite (Phaneritic Felsic Intrusive Igneous Rock) — igneous

Granite

Phaneritic Felsic Intrusive Igneous Rock

Asphalt / Bituminous Aggregate (Bituminous mixture (Hydrocarbon-based sediment)) — sedimentary

Asphalt / Bituminous Aggregate

Bituminous mixture (Hydrocarbon-based sediment)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

River Pebbles (Chert and Quartzite) (Sedimentary Clastic Rock (Silica-rich)) — sedimentary

River Pebbles (Chert and Quartzite)

Sedimentary Clastic Rock (Silica-rich)

Dyed Quartz Geode (Silicon Dioxide (SiO2) with artificial purple dye) — mineral

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial purple dye

Quartzite Pebble (Metamorphic Quartzite) — metamorphic

Quartzite Pebble

Metamorphic Quartzite

Chert / Flint (Silicon dioxide (Microcrystalline Quartz, $SiO_2$)) — sedimentary

Chert / Flint

Silicon dioxide (Microcrystalline Quartz, $SiO_2$)

Red faceted gemstone jewelry setting (Likely synthetic ruby or red spinel centerpiece with colorless accent stones; exact identification requires gemological testing) — gemstone

Red faceted gemstone jewelry setting

Likely synthetic ruby or red spinel centerpiece with colorless accent stones; exact identification requires gemological testing

Pearls (Pearl: biomineralized aragonite (CaCO₃) and conchiolin) — gemstone

Pearls

Pearl: biomineralized aragonite (CaCO₃) and conchiolin

Limonite / Iron Oxide Concretion (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O) — mineral

Limonite / Iron Oxide Concretion

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

Magnetite or Hematite Nodule (Iron Oxide (Fe3O4 or Fe2O3)) — mineral

Magnetite or Hematite Nodule

Iron Oxide (Fe3O4 or Fe2O3)

Agate (Water-Worn) (Cryptocrystalline quartz (SiO2)) — sedimentary

Agate (Water-Worn)

Cryptocrystalline quartz (SiO2)

Moldavite (Moldavite (Siliceous vitreous substance)) — tektite (natural glass)

Moldavite

Moldavite (Siliceous vitreous substance)

tektite (natural glass)

Blue Quartzite (likely dyed) (Silicon dioxide (SiO2) with likely color treatment) — metamorphic

Blue Quartzite (likely dyed)

Silicon dioxide (SiO2) with likely color treatment

Amethyst Lace Agate / Banded Amethyst (Silicon Dioxide (SiO2) with Fe3+ impurities) — mineral

Amethyst Lace Agate / Banded Amethyst

Silicon Dioxide (SiO2) with Fe3+ impurities

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Red Sandstone (Quartz Arenite (iron-stained) / SiO2) — sedimentary

Red Sandstone

Quartz Arenite (iron-stained) / SiO2