Pet Rock (Man-made Quartzite or Granite Cobble)
Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica
igneous or metamorphic (base stone); anthropogenic (decoration)
Category
Anthropogenic (Man Made Material)
Browse anthropogenic (man made material) specimens identified by the Rock Identifier community.
Learn about Anthropogenic (Man Made Material) in the encyclopedia
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Opalite
Synthetic Glass (Silica-based)
gemstone
Titanium Aura Quartz
Titanium bonded Silicon Dioxide (SiO2 + Ti)
mineral
Green Obsidian Sphere (man-made glass)
Vitreous Silica with Chromium/Iron additives
mineralogical simulant
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Non-geological / Synthetic
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
gemstone
Crackled Quartz (Blue Dyed)
Silicon Dioxide (SiO2) with anthropogenic dye
mineral
Aura Quartz (specifically Titanium Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)
mineral
Opalite
Synthetic Glass (Simulated Opal)
gemstone
Opalite
Synthetic Glass (Simulated Opal)
gemstone
Aura Quartz
Titanium or Gold bonded Silicon Dioxide (SiO2)
mineral
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
gemstone
Opalite
Synthetic Glass (Amorphized Silicon Dioxide)
mineraloid
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Chert (Arrowhead)
Chert (SiO2)
sedimentary
Tumbled Clear Quartz/Rock Crystal
Silicon Dioxide (SiO2)
mineral
Cubic Zirconia (Jewelry Setting)
Zirconium Dioxide (ZrO2)
gemstone
Diamond
Native Carbon (C)
mineral
Opalite Egg
Synthetic Glass (Simulated Opal)
mineral
Rainbow Hematite Ring
Iron(III) oxide (Fe2O3) with thin-film coating
mineral
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂), opaque-to-translucent milky variety
mineral
Cubic Zirconia (Jewelry Setting)
Cubic Zirconia (ZrO2)
gemstone
Dzi Bead (Etched Chalcedony)
Cryptocrystalline Quartz (SiO2) with chemical etching
mineral
Dragon's Breath (Mexican Opal Glass)
Artisan Foil Glass (SiO2 based)
mineraloid
Opalite
Man-made Glass (Synthetic Opalized Glass)
mineral
Titanium Aura Quartz
Silicon Dioxide (SiO2) coated with Titanium and Niobium
mineral
Concretion with Geode Cavity
Ferruginous Sandstone Concretion with Quartz Center
sedimentary
Terracotta (Man-made ceramic brick fragment)
Baked clay / High-iron ceramic (Silicate-based ceramic)
Anthropogenic material (Man-made sedimentary mimic)
Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Dalmatian Stone
Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)
igneous
Goldstone (with Tiger's Eye and Quartz)
Aventurine glass (Synthetic SiO2 with Cu inclusions)
mineral
Sea Glass
Amorphous silicon dioxide (man-made glass weathered by nature)
mineral
Green Sea Glass
Amorphous Silica (man-made glass), SiO2 + additive metal oxides
mineraloid / anthropogenic (man-made origin)
Felsic Drill Core (likely Gneiss or Granite)
Felsic Metamorphic Rock (Gneissic profile)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Ironstone Concretion (Pot Stone)
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary
Engineerged Quartz (Quartz Composite)
SiO2 (Silicon Dioxide) in a polymer resin matrix
mineral
Acrylic or Resin (Synthetic Imitation)
Polymethyl Methacrylate (PMMA) or Polyepoxide
Synthetic/Man-made Polymer
Chakra Stone Tower (Composite Multi-Mineral)
Crystalline Silicon Dioxide composite (SiO2) with various inclusions
mineral
Green Sea Glass
Man-made silicate glass (weathered)
sedimentary
Cullet Glass (Slag)
Amorphous Silicon Dioxide (Man-made)
Mineraloid
Green Aventurine
SiO2 (Silicon Dioxide with Fuchsite inclusions)
mineral