Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
Category
Browse mineral (man made glass) specimens identified by the Rock Identifier community.
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
Porcelain Tile (Sandstone-look)
Man-made Ceramic (resembling Quartz-rich Sandstone)
Man-made Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating/dye
Polished blue calcite sphere (tentative identification)
Calcite, CaCO₃; blue color generally results from trace impurities or inclusions
Vesicular basalt (weathered scoria)
Scoriaceous basalt; chiefly plagioclase, clinopyroxene, olivine, and iron-titanium oxides
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Rounded graywacke or sandstone cobble
Lithified clastic sandstone; likely quartz–feldspar–lithic grain aggregate in a silica or calcite matrix
Goldstone (Brown)
Aventurine glass
Dyed Dragon Vein Agate
Silicon Dioxide (SiO2) with artificial pigment
Hematite Beads
Hematite (Fe2O3)
Green Agate
Silicon dioxide (SiO₂)
Polymictic conglomerate or breccia (possibly concrete-like aggregate)
Lithified polymictic gravel; clasts may include basalt, granite, quartzite, and other silicates
Crackle Glass (Simulated Gemstone)
Amorphous Solid (SiO2)
Quartzite (Engineered Stone)
Silicon Dioxide (SiO2) based synthetic composite
Red glassy cabochon, likely synthetic ruby or red glass
Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass
Tumbled aqua glassy mineral specimen, likely chrysocolla or turquoise imitation
Uncertain from image; possible chrysocolla (hydrated copper aluminosilicate, variable composition) or dyed/man-made glass
Man-made Synthetic Material (Costume Faux Fur)
Synthetic Polymer (Polyester/Acrylic)
Goldstone
N/A (Synthetic Glass with Copper Inclusions)
Pet Rock (Man-made Quartzite or Granite Cobble)
Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica
Man-made Ceramic / Clay Figurine
Aluminosilicate Ceramic (Processed Clay)
Man-made Synthetic Material (Not a rock or mineral)
Polyester (Polyethylene terephthalate) / Faux Fur
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
Conglomerate
Conglomerate Rock (Paraconglomerate)
Green glassy mineral specimen, likely rough emerald or green fluorite
Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph
Blue slag glass / industrial smelter slag
Man-made iron-rich silicate slag; composition variable, commonly Fe–Ca–Mg–Al silicates with glassy phases
Goldstone (aventurine glass)
Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone
Blue Crackle Quartz (Dyed Quarzite)
Silicon Dioxide (SiO2) with artificial dye
Yellow cabochon gemstone, likely citrine or yellow glass imitation
Quartz (SiO₂), if natural citrine; visual evidence is insufficient to exclude man-made glass or resin
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Blue Goldstone
Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)
Colorless faceted quartz-like gemstone
Likely quartz (SiO₂), though the appearance may also indicate man-made glass or cubic zirconia
Blue glass-like bead or gemstone keychain ornament
Indeterminate; likely cobalt-blue glass or synthetic blue spinel, not identifiable as a natural mineral from the image
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Corundum (Pink Sapphire / Ruby)
Al2O3 (Aluminum Oxide)
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Black Obsidian
Obsidian (Volcanic Glass, SiO2 + impurities)
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Brick
Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)
Terrazzo (with Marble and Granite fragments)
Cementitious or resinous composite containing Calcium Carbonate (CaCO3) and Silicates
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration