Aventurine Quartz
Silicon Dioxide (SiO2) with Fuchsite inclusions
Category
Browse antropogenic (man made material) specimens identified by the Rock Identifier community.
Aventurine Quartz
Silicon Dioxide (SiO2) with Fuchsite inclusions
Moldavite
Tektite (Impact Glass), ~80% SiO2 + Al2O3
Red glassy cabochon, likely synthetic ruby or red glass
Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass
Cobalt Glass Slug (Cullet)
Man-made Silicate Glass with Cobalt Oxide (CoO)
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
Porcelain Tile (Sandstone-look)
Man-made Ceramic (resembling Quartz-rich Sandstone)
Sea Glass
Man-made silicate glass (Amorphous silicon dioxide)
Bismuth
Bismuth (Bi)
Brick
Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
Opalite
Synthetic Opalised Glass
Opalite
Synthetic Silicon Dioxide (SiO2)
Slag Glass
Anthropogenic Amorphous Silicon Dioxide
Rainbow Hematite (Titanium Coated)
Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
Milky quartz (rough quartz fragment)
Quartz, silicon dioxide (SiO₂)
Chert Concretion
Chert (Microcrystalline Quartz, SiO2)
Crescent Pebble
Weathered Quartzite or Sandstone Fragment
Boxwork or Septarian Concretion
Septarian nodule / Boxwork weathering
Clear quartz sphere
Quartz (silicon dioxide, SiO₂)
Mystic Topaz
Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating
Opalite
Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)
Obsidian (Blue)
Volcanic Glass (SiO2)
Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye
Slag
Metallurgical Slag
Pink Quartz / Sea Glass
Silicon Dioxide (SiO2)
Tumbled opalite (likely synthetic glass)
Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species
Blue goldstone
Man-made aventurine glass containing metallic copper particles; not a natural mineral
Likely polished quartz or glass-like mineral cabochon
Probably quartz (SiO₂), though the image cannot exclude man-made glass
Clear quartz crystal (likely)
Quartz, silicon dioxide (SiO₂)
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂)
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
Quartz (likely milky quartz or quartz glass-like fragment)
Quartz, silicon dioxide (SiO₂)
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
Tumbled opalite (likely man-made glass)
Opalite, a trade name for opalescent glass; not natural opal
Rock crystal quartz fragments
Quartz (silicon dioxide, SiO₂)
Blue Goldstone
Aventurine Glass
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
Black tumbled stone, possibly obsidian
Obsidian (volcanic glass; predominantly SiO₂), identification uncertain from image
Clear quartz crystal (likely)
Quartz, silicon dioxide (SiO₂)