Rock Identifier

Category

Manufactured Glass

Browse manufactured glass specimens identified by the Rock Identifier community.

Learn about Manufactured Glass in the encyclopedia

Green Obsidian

Blue Obsidian

Lavender Obsidian

Violet Obsidian

Yellow Obsidian

Yellow Obsidian

Crimson Obsidian

Tangerine Obsidian

Lilac Obsidian

Mint Obsidian

Orange Obsidian

Electric Blue Obsidian

Pink Lady Obsidian

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Asphalt Chunk (Asphalt concrete) — man-made composite

Asphalt Chunk

Asphalt concrete

man-made composite

Note on Image Identification: Textile (N/A (Anthropogenic material)) — not a rock

Note on Image Identification: Textile

N/A (Anthropogenic material)

Faience and Carnelian in Egyptian Revival Jewelry (Faience (quartz frit) and Carnelian (chalcedony, SiO2)) — gemstone

Faience and Carnelian in Egyptian Revival Jewelry

Faience (quartz frit) and Carnelian (chalcedony, SiO2)

Fossilized shell or coral fragment (Indeterminate biogenic carbonate; likely calcite/aragonite (CaCO₃)) — fossil

Fossilized shell or coral fragment

Indeterminate biogenic carbonate; likely calcite/aragonite (CaCO₃)

Possible granite or granitic rock fragment (Unidentified granitoid; precise identification is not possible from this small image) — igneous

Possible granite or granitic rock fragment

Unidentified granitoid; precise identification is not possible from this small image

Strawberry Quartz (or Rose Quartz / Cherry Quartz) (Silicon Dioxide (SiO2) with Lepidocrocite, Hematite, or Goethite inclusions) — mineral

Strawberry Quartz (or Rose Quartz / Cherry Quartz)

Silicon Dioxide (SiO2) with Lepidocrocite, Hematite, or Goethite inclusions

Dark rounded stone, possibly basalt (Likely fine-grained basalt; exact identification is uncertain from the photograph) — igneous

Dark rounded stone, possibly basalt

Likely fine-grained basalt; exact identification is uncertain from the photograph

Amber (possibly a small polished amber cabochon) (Fossilized tree resin; amber is an organic gemstone, not a mineral) — gemstone

Amber (possibly a small polished amber cabochon)

Fossilized tree resin; amber is an organic gemstone, not a mineral

Green Slag Glass (Cullet (Amorphous Silicon Dioxide with impurities)) — Man-made rock-like material

Green Slag Glass

Cullet (Amorphous Silicon Dioxide with impurities)

Man-made rock-like material

Slag Glass (Silicon dioxide with impurities) — mineral

Slag Glass

Silicon dioxide with impurities

Blue quartzite or blue aventurine glass-like aggregate (Quartzite, predominantly SiO₂ (identification uncertain from image)) — metamorphic

Blue quartzite or blue aventurine glass-like aggregate

Quartzite, predominantly SiO₂ (identification uncertain from image)

Sandstone (Weathered / Crushed) (Quartz Sandstone) — sedimentary

Sandstone (Weathered / Crushed)

Quartz Sandstone

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Synthetic Convention Badge (Plastic/PVC) (Polyvinyl Chloride (PVC) / Polycarbonate) — mineraloid (synthetic)

Synthetic Convention Badge (Plastic/PVC)

Polyvinyl Chloride (PVC) / Polycarbonate

mineraloid (synthetic)

Asphalt concrete (Anthropogenic conglomerate) — sedimentary

Asphalt concrete

Anthropogenic conglomerate

Dark vesicular volcanic rock, likely basaltic scoria (Scoria (vesicular basalt; composition commonly plagioclase, pyroxene, and iron-rich glass)) — igneous

Dark vesicular volcanic rock, likely basaltic scoria

Scoria (vesicular basalt; composition commonly plagioclase, pyroxene, and iron-rich glass)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

K-Feldspar (Potassium Feldspar / Pink Feldspar) (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

K-Feldspar (Potassium Feldspar / Pink Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Greenish altered rock, possibly serpentinite or chlorite-rich schist (Tentative: serpentine-group minerals, chiefly antigorite/lizardite, or chlorite–actinolite assemblage) — metamorphic

Greenish altered rock, possibly serpentinite or chlorite-rich schist

Tentative: serpentine-group minerals, chiefly antigorite/lizardite, or chlorite–actinolite assemblage

Small brown-gray mineral fragment (Indeterminate; possibly weathered quartz-, feldspar-, or iron-oxide-bearing rock) — mineral

Small brown-gray mineral fragment

Indeterminate; possibly weathered quartz-, feldspar-, or iron-oxide-bearing rock

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

Quartz (Clear Quartz)

Silicon Dioxide (SiO2)

Quartz (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Native Gold (Gold (Au)) — mineral

Native Gold

Gold (Au)

Red jasper (likely polished and carved) (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides) — gemstone

Red jasper (likely polished and carved)

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

Diamond Plate (Steel) (Alloyed Carbon Steel or Aluminum with 'Durbar' pattern) — not a rock (Man-made industrial metal)

Diamond Plate (Steel)

Alloyed Carbon Steel or Aluminum with 'Durbar' pattern

not a rock (Man-made industrial metal)

Synthetic Resin Charm (Seal Shape) (Polymer Resin with plastic glitter / Polyethylene terephthalate glitters) — Synthetic material (Not a rock or mineral)

Synthetic Resin Charm (Seal Shape)

Polymer Resin with plastic glitter / Polyethylene terephthalate glitters

Synthetic material (Not a rock or mineral)

Small metallic mineral fragment (Indeterminate; possibly galena, hematite, magnetite, or metallic meteorite fragment) — mineral

Small metallic mineral fragment

Indeterminate; possibly galena, hematite, magnetite, or metallic meteorite fragment

Asphalt (Asphalt concrete) — sedimentary

Asphalt

Asphalt concrete

Slag Glass (Cullet) (Amorphous Silicon Dioxide (SiO2) with metal oxide colorants) — Anthropogenic (Man-made)

Slag Glass (Cullet)

Amorphous Silicon Dioxide (SiO2) with metal oxide colorants

Anthropogenic (Man-made)

Cullet (Slag Glass) (Amorphous Silica (SiO2) with various metal oxide colorants) — mineraloid / anthropogenic

Cullet (Slag Glass)

Amorphous Silica (SiO2) with various metal oxide colorants

mineraloid / anthropogenic

Small faceted diamond-like gemstones (Likely diamond (crystalline carbon, C), but visual identification is uncertain) — gemstone

Small faceted diamond-like gemstones

Likely diamond (crystalline carbon, C), but visual identification is uncertain

Rounded sandstone pebble (Quartz-rich sandstone, likely arenite) — sedimentary

Rounded sandstone pebble

Quartz-rich sandstone, likely arenite

Dark tumbled stone, likely basalt (Basalt (fine-grained mafic volcanic rock; commonly plagioclase, pyroxene, and olivine)) — igneous

Dark tumbled stone, likely basalt

Basalt (fine-grained mafic volcanic rock; commonly plagioclase, pyroxene, and olivine)

Metallic Ornament / Jewelry (N/A - This is an artificial object, not a geological specimen.) — This appears to be a man-made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen.

Metallic Ornament / Jewelry

N/A - This is an artificial object, not a geological specimen.

This appears to be a man-made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen.

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)