Rock Identifier

Category

Mineraloid (Man Made)

Browse mineraloid (man made) specimens identified by the Rock Identifier community.

Learn about Mineraloid (Man Made) in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Zincite

Lherzolite

Gondite

Dunite

Ring with an Orange Inlay (N/A (Man-made object)) — Man-made Object (Ring)

Ring with an Orange Inlay

N/A (Man-made object)

Man-made Object (Ring)

Rose Quartz and Cherry Quartz (Dyed Glass/Quartz) (Silicon Dioxide (SiO2) with inclusions/dye) — gemstone

Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)

Silicon Dioxide (SiO2) with inclusions/dye

Sea Glass (Amorphous silicon dioxide) — mineral

Sea Glass

Amorphous silicon dioxide

Opalite (Synthesized glass / Silicon dioxide) — gemstone

Opalite

Synthesized glass / Silicon dioxide

Not a rock, mineral, or geological specimen — N/A

Not a rock, mineral, or geological specimen

Opalite (Synthetic glass / Opaque silicious glass) — gemstone

Opalite

Synthetic glass / Opaque silicious glass

Small pebble, likely limestone (Unidentified carbonate pebble, possibly micritic limestone (calcite, CaCO₃)) — sedimentary

Small pebble, likely limestone

Unidentified carbonate pebble, possibly micritic limestone (calcite, CaCO₃)

Man-made Crystal (Lead Glass) (Lead oxide-doped Silica Glass (approx. SiO2 + PbO)) — Mineraloid/Synthetic Material

Man-made Crystal (Lead Glass)

Lead oxide-doped Silica Glass (approx. SiO2 + PbO)

Mineraloid/Synthetic Material

Slag Glass (Cullet) (Amorphous Silica (man-made), primarily SiO2 with trace metal oxides) — Mineraloid / Synthetic Glass

Slag Glass (Cullet)

Amorphous Silica (man-made), primarily SiO2 with trace metal oxides

Mineraloid / Synthetic Glass

Concrete Fragment (Artificial Conglomerate (Cement and Aggregate)) — sedimentary

Concrete Fragment

Artificial Conglomerate (Cement and Aggregate)

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Blue Obsidian (Volcanic Glass (Amorphous)) — gemstone

Blue Obsidian

Volcanic Glass (Amorphous)

Diamond (or Simulant) (Carbon (C)) — gemstone

Diamond (or Simulant)

Carbon (C)

Black Obsidian (Obsidian (Volcanic Glass, SiO2 + impurities)) — igneous

Black Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Blue Goldstone (Man-made glass infused with copper crystals) — mineral

Blue Goldstone

Man-made glass infused with copper crystals

Blue opalescent glass-like gemstone (possibly imitation opalite) (Likely man-made opalite glass; composition varies, typically silica-based glass) — gemstone

Blue opalescent glass-like gemstone (possibly imitation opalite)

Likely man-made opalite glass; composition varies, typically silica-based glass

Sea Glass (Silicon dioxide (mostly)) — mineral

Sea Glass

Silicon dioxide (mostly)

Blue crystal pendant (likely blue glass or synthetic crystal) (Not identifiable from the image; possibly synthetic quartz or glass, rather than a natural mineral) — gemstone

Blue crystal pendant (likely blue glass or synthetic crystal)

Not identifiable from the image; possibly synthetic quartz or glass, rather than a natural mineral

Quartz pebble (Quartztite fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz pebble (Quartztite fragment)

Silicon Dioxide (SiO2)

Small black stone fragment (possibly obsidian) (Unidentified dark rock; obsidian is volcanic glass (composition typically rhyolitic)) — igneous

Small black stone fragment (possibly obsidian)

Unidentified dark rock; obsidian is volcanic glass (composition typically rhyolitic)

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Stainless Steel (Polished) (Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)) — Mineral equivalent / Metal Alloy

Stainless Steel (Polished)

Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)

Mineral equivalent / Metal Alloy

Obsidian (Volcanic Glass (SiO2)) — igneous

Obsidian

Volcanic Glass (SiO2)

Cobalt Blue Glass / Cullet Glass (Silicon dioxide (Amorphous man-made glass)) — mineral

Cobalt Blue Glass / Cullet Glass

Silicon dioxide (Amorphous man-made glass)

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

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Goldstone (Man-made glass with copper inclusions) — gemstone

Goldstone

Man-made glass with copper inclusions

Exposed Aggregate Concrete (Pea Gravel) (Concrete with Siliceous Alluvial Gravels) — sedimentary (man-made conglomerate)

Exposed Aggregate Concrete (Pea Gravel)

Concrete with Siliceous Alluvial Gravels

sedimentary (man-made conglomerate)

Concrete Fragment (Hardened Portland cement and mineral aggregate) — sedimentary (anthropogenic)

Concrete Fragment

Hardened Portland cement and mineral aggregate

sedimentary (anthropogenic)

Opalite (Synthetic Opalite Glass / Opalized Glass) — gemstone

Opalite

Synthetic Opalite Glass / Opalized Glass

Asphalt Concrete (Bituminous conglomerate) — sedimentary

Asphalt Concrete

Bituminous conglomerate

Slag (Industrial Byproduct) (Artificial silicate/iron byproduct) — Mineral description (Anthropogenic material)

Slag (Industrial Byproduct)

Artificial silicate/iron byproduct

Mineral description (Anthropogenic material)

Green Obsidian Sphere (man-made glass) (Vitreous Silica with Chromium/Iron additives) — mineralogical simulant

Green Obsidian Sphere (man-made glass)

Vitreous Silica with Chromium/Iron additives

mineralogical simulant

Opalite (Synthetic Opalite (Man-made glass)) — mineral

Opalite

Synthetic Opalite (Man-made glass)

Transit Token (RTD Denver) (Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)) — not a rock or mineral (anthropogenic material)

Transit Token (RTD Denver)

Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)

not a rock or mineral (anthropogenic material)

Goldstone (Man-made glass with copper inclusions) — mineral

Goldstone

Man-made glass with copper inclusions

Blue Slag Glass (Man-made Silicon Dioxide (Amorphous)) — Anthropogenic (Man-made)

Blue Slag Glass

Man-made Silicon Dioxide (Amorphous)

Anthropogenic (Man-made)

Green Sea Glass (Man-made silicate glass (weathered)) — sedimentary

Green Sea Glass

Man-made silicate glass (weathered)

Likely iron-rich slag or weathered ironstone fragment (Uncertain; possibly iron oxide–rich material (hematite/goethite) or industrial iron slag) — mineral

Likely iron-rich slag or weathered ironstone fragment

Uncertain; possibly iron oxide–rich material (hematite/goethite) or industrial iron slag

Blue-green faceted gemstone, possibly glass or synthetic material (Not identifiable from the image; possible synthetic spinel or glass) — gemstone

Blue-green faceted gemstone, possibly glass or synthetic material

Not identifiable from the image; possible synthetic spinel or glass

Asphalt (Road Aggregate) (Bituminous conglomerate) — sedimentary

Asphalt (Road Aggregate)

Bituminous conglomerate

Crushed Stone (Likely Limestone or Granite) (Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite) — sedimentary or igneous

Crushed Stone (Likely Limestone or Granite)

Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite

sedimentary or igneous

Mystic Topaz (Treated Quartz or Topaz) (Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating) — gemstone

Mystic Topaz (Treated Quartz or Topaz)

Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating