Carborundum
Silicon Carbide (SiC)
Category
Browse not a rock (man made polymer) specimens identified by the Rock Identifier community.
Carborundum
Silicon Carbide (SiC)
Opalite
Synthetic Opalised Glass
Metallic sulfide mineral fragment, likely galena
Galena (lead sulfide, PbS), tentative identification
Obsidian (likely black volcanic glass)
Obsidian; primarily amorphous volcanic silica glass, approximately SiO₂-rich rhyolitic composition
Cullet (Slag Glass)
Amorphous Silica (Industrial byproduct)
Brick
Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)
Opalite-style pendant (likely synthetic glass, not natural opal)
Opalescent glass; commonly sold as “opalite” (not a recognized mineral species)
Ferruginous Conglomerate (or Iron-Rich Concrete/Slag)
Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)
Pink Cubic Zirconia (CZ)
Zirconium Dioxide (ZrO2)
Blue Goldstone
Synthetic Avanturine Glass (or Aventurine Glass)
Likely clear quartz crystal or glass-like gemstone
Quartz, silicon dioxide (SiO₂); exact identification is uncertain from the strongly magenta-lit image
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Tumbled black stone, likely black obsidian
Obsidian; volcanic glass, typically rhyolitic composition (SiO₂-rich)
Aventurine
Quartz containing inclusions of Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Ferro-silicate Slag
Industrial Vitrified Slag (High-silica amorphous glass)
Green glassy mineral fragment, possibly fluorite
Fluorite (calcium fluoride, CaF₂), tentative identification
Portable Ceramic Space Heater
Polished Acrylonitrile Butadiene Styrene (ABS) Plastic with Ceramic Heating Elements
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Blue slag glass or dyed glass-like industrial material
Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
Tumbled black obsidian (likely)
Volcanic glass; chiefly silica-rich rhyolitic glass (SiO₂)
Rainbow Hematite (Man-made/Treated)
Tumbled Hematite with Titanium/Anodized coating (Iron(III) oxide, Fe2O3)
Glass / Silicon Dioxide (Man-made)
SiO2 (Amorphous Silicon Dioxide)
Man-made Glass (Tumbled/Shaped)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Man-made Crystal (Lead Glass)
Lead oxide-doped Silica Glass (approx. SiO2 + PbO)
Man-made Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating/dye
Blue sea glass or blue glassy mineral fragment
Uncertain; likely man-made soda-lime glass, not a natural mineral
Blue glassy fragment among beach gravel
Likely cobalt-blue man-made glass; not a natural mineral specimen
Opalite
Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Libyan Desert Glass
Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)
Asphalt Pavement (with aggregate)
Asphalt concrete
Quartzite (or Engineered Quartz Stone)
SiO2 (Silicon Dioxide)
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Fired Clay Brick (Anthropic Rock substitute)
Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)
Possible weathered basalt or slag fragment
Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image
Dyed Dragon Vein Agate
Silicon Dioxide (SiO2) with artificial pigment
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Blue Impression Jasper beads
Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions
Carved Mottled Greenish-Yellow Crystal/Glass Object
Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.
Digital Multimeter (Synthetic Object)
Digital Multimeter (DMM)
Engineered Quartz
Engineered Stone (primarily SiO2)