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

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

Green Aventurine

Quartz with Fuchsite inclusions (SiO2)

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

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Green Aventurine (Aventurine Quartz (SiO2 with inclusions of Fuchsite)) — Mineral

Green Aventurine

Aventurine Quartz (SiO2 with inclusions of Fuchsite)

Green Aventurine (Quartz) (SiO2 (Silicon Dioxide with Fuchsite inclusions)) — mineral

Green Aventurine (Quartz)

SiO2 (Silicon Dioxide with Fuchsite inclusions)

Dyed Tumbled Quartz (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Tumbled Quartz

Silicon Dioxide (SiO2) with artificial pigment

Sandstone (Sedimentary Rock (Quartz arenite)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone

Clastic Sedimentary Rock (primarily SiO2)

Grey Chalcedony (Silicon Dioxide (SiO2)) — mineral

Grey Chalcedony

Silicon Dioxide (SiO2)

Quartz Sandstone (Quartz Arenite) — sedimentary

Quartz Sandstone

Quartz Arenite

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

Citrine

Citrine (Silicon Dioxide - SiO2)

Sea Glass (Frosted Glass) (Amorphous Silica (SiO2) with various additives) — Man-made material (Anthropogenic 'mineraloid')

Sea Glass (Frosted Glass)

Amorphous Silica (SiO2) with various additives

Man-made material (Anthropogenic 'mineraloid')

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

Clear Quartz Crystal

Silicon Dioxide (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Green Quartz (Aventurine)

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

Red Slag Glass (Cullet) (Amorphous Silicon Dioxide (SiO2) with metallic dopants) — Antropogenic (Man-made material)

Red Slag Glass (Cullet)

Amorphous Silicon Dioxide (SiO2) with metallic dopants

Antropogenic (Man-made material)

Quartz with Epidote (Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate [Ca2(Al,Fe)3(SiO4)3(OH)]) — metamorphic

Quartz with Epidote

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate [Ca2(Al,Fe)3(SiO4)3(OH)]

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

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sapphire Rough (Corundum) (Corundum (Aluminum Oxide, Al2O3)) — mineral

Sapphire Rough (Corundum)

Corundum (Aluminum Oxide, Al2O3)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Tumbled chalcedony or agate pebble (Microcrystalline quartz (SiO₂), likely chalcedony with possible iron-oxide inclusions) — mineral

Tumbled chalcedony or agate pebble

Microcrystalline quartz (SiO₂), likely chalcedony with possible iron-oxide inclusions

Yellow Quartz (Citrine/Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine/Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Pyrite in Matrix (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix

Iron Sulfide (FeS2)

Sandstone (Quartzite-rich Cobble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich Cobble)

Clastic sedimentary rock (primarily SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Herkimer Diamond (Quartz (Silicon Dioxide - SiO2)) — mineral

Herkimer Diamond

Quartz (Silicon Dioxide - SiO2)

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Banded Sandstone (Beach Pebble) (Quartz Arenite Sandstone) — sedimentary

Banded Sandstone (Beach Pebble)

Quartz Arenite Sandstone

Tumbled agate (likely Botswana or fortification agate) (Microcrystalline quartz, SiO₂ (chalcedony with banded impurities)) — mineral

Tumbled agate (likely Botswana or fortification agate)

Microcrystalline quartz, SiO₂ (chalcedony with banded impurities)

Blue Aventurine (Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions) — mineral

Blue Aventurine

Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions

Amethyst on Basalt Matrix (Crystalline Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst on Basalt Matrix

Crystalline Silicon Dioxide (SiO2) with iron impurities

Weathered Sandstone (Quartz Arenite / Clastic Sedimentary Rock) — sedimentary

Weathered Sandstone

Quartz Arenite / Clastic Sedimentary Rock

Quartz Veined Quartzite or Sandstone (Quartzite with Quartz Veins (SiO2)) — sedimentary

Quartz Veined Quartzite or Sandstone

Quartzite with Quartz Veins (SiO2)

Agate (specifically, multi-colored or pastel-dyed agate) (Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).) — Mineral

Agate (specifically, multi-colored or pastel-dyed agate)

Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).

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

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Heat-Treated Amethyst (Commercial Citrine) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Heat-Treated Amethyst (Commercial Citrine)

Silicon Dioxide (SiO2) with iron impurities

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Sandstone (Clastic Sedimentary Rock (composed mostly of quartz, SiO2)) — sedimentary

Sandstone

Clastic Sedimentary Rock (composed mostly of quartz, SiO2)

Quartz Pebble (Silica (SiO2)) — mineral

Quartz Pebble

Silica (SiO2)