Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
Category
Browse man made rock (technosol) specimens identified by the Rock Identifier community.
Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
Silicon Carbide (Carborundum)
Silicon Carbide (SiC) / Moissanite (natural)
Titanium-Coated Hematite (Aura Hematite)
Titanium-bonded Hematite (Fe2O3 with a Ti coating)
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
Man-made Carved Stone (Scream Mask/Skull motif)
Carved Soapstone or Serpentine-rich rock
Green Aventurine
SiO2 (Silicon Dioxide with Fuchsite inclusions)
Slag
Anthropogenic glassy silicate
Aura Quartz Geodes (Lab-Altered)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition
Man-made Synthetic Material (Costume Faux Fur)
Synthetic Polymer (Polyester/Acrylic)
Bismuth Crystal
Bismuth (Bi)
Aura Rose Quartz
SiO2 (Silicon Dioxide with Titanium/Gold coating)
Goldstone (aventurine glass)
Man-made copper-bearing glass; not a natural mineral (commonly sold as blue/brown goldstone)
Blue cabochon, likely dyed or synthetic material
Undetermined; possibly dyed chalcedony (SiO₂), glass, or synthetic corundum
Cubic Zirconia
Cubic Zirconium Dioxide (ZrO2)
Aura Quartz (Titanium-coated Quartz)
Silicon Dioxide (SiO2) with metallic vapor coating
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
Crackle Agate / Dyed Quartz
SiO2 (Silicon Dioxide)
Fossiliferous limestone with colonial coral
Calcite (CaCO₃) limestone containing fossil tabulate or rugose coral colonies
Tumbled milky quartz
Quartz, silicon dioxide (SiO₂)
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
Dyed Agate
Chalcedony (SiO2)
Zinc Alloy (Silver-plated)
Zinc Alloy Casting (Zn-Al-Mg-Cu)
Asphalt Concrete (Bituminous Concrete)
Bituminous aggregate
Opalite (Synthetic Moonstone/Sea Opal)
Silicon Dioxide (SiO2) glass with metallic inclusions
Goldstone (likely red/brown aventurine glass)
Man-made aventurine glass; copper-bearing silicate glass (not a natural mineral)
Dyed or synthetic turquoise-blue glass-like specimen
Likely man-made colored glass or resin; exact identification requires testing
Obsidian
Volcanic Glass
White quartz pebble or chip
Quartz (silicon dioxide, SiO₂), possibly milky quartz
Unidentified translucent crystal/mineral fragment
Likely quartz (SiO₂), but visual identification is uncertain
Tumbled white chalcedony (likely milky quartz)
Chalcedony, microcrystalline quartz (SiO₂)
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
Mohave Turquoise (Composite/Stabilized)
Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions
Concrete
Hydrated Portland Cement Aggregate Composite
Goldstone (Brown)
Aventurine Glass (Silicon Dioxide infused with Copper crystals)
Green Quartz / Chrysoprase / Sea Glass
Silicon Dioxide (SiO2)
Clear quartz crystal
Quartz (silicon dioxide, SiO₂)
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
Clear quartz fragment
Quartz (silicon dioxide, SiO₂)
Opalite
Synthetic Glass (Hydrated Silica Simulant)
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
Opalite
Synthetic Opalised Glass