Sea Glass
Man-made silicate glass
Category
Browse antropogenic (man made industrial byproduct) specimens identified by the Rock Identifier community.
Sea Glass
Man-made silicate glass
Ring with an Orange Inlay
N/A (Man-made object)
Sea Glass
Man-made silicate glass
Sea Glass
Man-made vitreous material
Slag
Anthropogenic Vitrification Product / Silicate Slag
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
Ferruginous Conglomerate (or Iron-Rich Concrete/Slag)
Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
Polished dendritic agate or jasper
Microcrystalline quartz (SiO₂), likely chalcedony with iron/manganese dendrites
Smelter Slag
Anthropogenic Silicate Slag
Concrete
Anthropogenic Conglomerate
Polished silver sheen obsidian heart
Obsidian (volcanic glass), primarily rhyolitic silica-rich glass
Quartzite (Engineered Stone)
Silicon Dioxide (SiO2) based synthetic composite
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
Blue Glass or Slag Glass
Amorphous Silica (Anthropogenic Glass)
Black glassy fragment, likely obsidian or industrial glass
Volcanic glass (obsidian), chiefly amorphous SiO₂; identification uncertain from image
Slag Glass
Silicon dioxide with impurities
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
Cubic Zirconia (Simulated Diamond)
Cubic Zirconia (ZrO2)
Iron Slag
Ferrous Slag (Industrial Byproduct)
Slag Glass (Cullet Glass)
Amorphous Silica (Industrial byproduct)
Carborundum
Silicon Carbide (SiC)
Clear quartz tumbled stone
Quartz (silicon dioxide, SiO₂)
Chert (Arrowheads)
Microcrystalline Quartz (SiO2)
Carborundum (Silicon Carbide)
Silicon Carbide (SiC) / Moissanite (natural form)
Anthropogenic Heat Source (Electronic/Industrial Interface)
Thermal IR emission (Electronic infrastructure)
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
Concrete Rubble with Aggregate
Hardened Portland Cement Paste with Coarse Aggregate
Green glass sphere/marble
Soda-lime glass (primarily SiO2, Na2O, CaO)
Exposed Aggregate Concrete (Pea Gravel)
Concrete with Siliceous Alluvial Gravels
Purple glassy pebble, possibly slag glass
Unidentified; likely man-made glass rather than a natural mineral
Green Glass (often marketed as 'Obsidian' or 'Green Quartz')
Amorphous Silica (SiO2) with copper or chromium additives
Ferrochrome Slag
Calcium-Aluminium-Magnesium Silicate Slag
Concrete Fragment
Hardened Portland cement and mineral aggregate
Iron Slag
Anthropogenic Iron Silicate
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Titanium Coated Kyanite (Aura Kyanite)
Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating
Blue-green faceted gemstone, possibly glass or synthetic material
Not identifiable from the image; possible synthetic spinel or glass
Asphalt (Road Aggregate)
Bituminous conglomerate
Mystic Topaz (Treated Quartz or Topaz)
Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating