Mahogany Obsidian
Obsidian (Volcanic Glass with Hematite/Magnetite inclusions), SiO2
Category
Browse mineraloid like synthetic material specimens identified by the Rock Identifier community.
Mahogany Obsidian
Obsidian (Volcanic Glass with Hematite/Magnetite inclusions), SiO2
Obsidian
Obsidian (Volcanic Glass; SiO2 content > 70%)
Dyed Agate
Silicon Dioxide (SiO2) - variety Chalcedony
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
Cullet (Slag Glass)
Amorphous Silica (Industrial byproduct)
Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
Amber
Succinite (C10H16O)
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
Bituminous Coal
Organic-rich sedimentary rock (Complex hydrocarbons)
Ring with an Orange Inlay
N/A (Man-made object)
Cobalt Blue Slag Glass
Amorphous Silicon Dioxide (anthropogenic) with Cobalt additives
Opalite
Man-made glass (traditionally simulated Opal)
Amber
Succinite (C10H16O)
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
Diamond
Native Carbon (C)
Blue Goldstone
Auraventurine (Synthetic glass with cobalt and copper inclusions)
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Byproduct)
Slag (Industrial Glass)
Anthropogenic Amorphous Vitreous Silicate
Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
Opalite
Opalescent Glass (SiO2 + coloring agents)
Clear Quartz crystals on a Matrix base (Geode fragment)
Silicon Dioxide (SiO2)
Blue Goldstone
Aventurine Glass (SiO2 with Cobalt/Copper inclusions)
Amber
Succinates (Organic compound: C10H16O)
Amber
Succinite (Resinite)
Cat's Eye Moonstone (Simulated/Synthetic or natural Cat's Eye Quartz/Glass)
There is no single scientific name. The appearance suggests either: Moonstone (feldspar group), Cat's Eye Quartz (SiO2), Apatite (Ca5(PO4)3(F,Cl,OH)), or most likely a synthetic material such as Fiber Optic Glass or 'Opalite' (a type of glass).
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Yellow Ocher (Limonite)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
Synthetic Faux Fur Fursuit
Polyacrylonitrile / Polyester (Synthetic Textile)
Cubic Zirconia (Simulated Diamond)
Zirconium dioxide (ZrO2)
Staurolite (Fairy Stone)
Staurolite (Fe2+2Al9Si4O23(OH))
Obsidian
Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Limonite (Iron Ore/Sandstone mixture)
Limonite (FeO(OH)·nH2O) often mixed with Goethite and sedimentary matrix
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
Goldstone (with Tiger's Eye and Quartz)
Aventurine glass (Synthetic SiO2 with Cu inclusions)
Opalite (a synthetic glass)
Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant
Synthetic Convention Badge (Plastic/PVC)
Polyvinyl Chloride (PVC) / Polycarbonate
Bouncy Ball (Synthetic Rubber Polymer)
Polybutadiene / Ethylene Vinyl Acetate (EVA)
Assorted Semi-Precious Gemstone Crosses
Quartz, Silicates, Carbonates (various)
Fire Opal (in Matrix)
Hydrated Silica (SiO2·nH2O)
Amber (Simulated/Faturan Style)
Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)
Green Glass (often marketed as 'Obsidian' or 'Green Quartz')
Amorphous Silica (SiO2) with copper or chromium additives