Opalite (Synthetic Opalized Glass)
Synthetic Silicon Dioxide (SiO2) glass
Category
Browse man made material (anthro lithic product) specimens identified by the Rock Identifier community.
Opalite (Synthetic Opalized Glass)
Synthetic Silicon Dioxide (SiO2) glass
Diamond (or Simulant)
Carbon (C)
Sea Glass
Silicon dioxide (mostly)
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
Polished black stone, likely black obsidian
Obsidian (volcanic glass), chiefly silica-rich rhyolitic composition
Goldstone
Avventurina (Man-made Glass with Copper inclusions)
Goldstone (Red)
Aventurine Glass (SiO2 + Cu)
Quartz pebble (Quartztite fragment)
Silicon Dioxide (SiO2)
Stainless Steel (Polished)
Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)
Diamond
Carbon (C)
Goldstone
Aventurine Glass (Man-made glass with copper inclusions)
Goldstone (Brown/Gold)
Aventurine Glass (Man-made glass with Copper inclusions)
Sea Glass
Man-made vitreous material (silica-based glass)
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock pebble
Opalite
Man-made Opalized Glass (Synthetic Glass)
Slag
Anthropogenic Vitrification Product / Silicate Slag
Ceramic or Polished Stone Heart (Anthropogenic Material)
Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)
Blue Crackle Quartz (Dyed Quarzite)
Silicon Dioxide (SiO2) with artificial dye
Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating
Opalite
Man-made opalescent glass
Slag Glass
Amorphous Silicate (Man-made)
Blue Obsidian (Cullet Glass)
Silicon Dioxide (Amorphous Glass)
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Sea Glass
Man-made silicate glass
Asphalt (Road Aggregate)
Bituminous Conglomerate / Asphalt Concrete
Metal Alloy (Likely Pewter or Sterling Silver)
Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).
Concrete or asphalt-like aggregate surface with a dark fragment
Uncertain; likely artificial concrete containing mixed lithic aggregate, not a natural rock
Carborundum
Silicon Carbide (SiC)
Mystic Topaz (Treated Quartz or Topaz)
Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating
Sandstone Concretion
Limonitic Sandstone Concretion
Opalite
Synthetic Glass (Simulated Opal)
Cullet (Slag Glass)
Amorphous Silica (Industrial byproduct)
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
Titanium-coated Metal Cube (Man-made Fidget Toy)
Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)
Ferro-silicate Slag
Industrial Vitrified Slag (High-silica amorphous glass)
Pink Cubic Zirconia (CZ)
Zirconium Dioxide (ZrO2)
Aura Quartz (Titanium Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti)
Concretion (Sandstone)
Carbonate-cemented Sandstone Concretion
Opalite Egg
Synthetic Glass (Simulated Opal)
Opalite
Synthetic Glass (Silica-based)