Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
sedimentary
Category
Sedimentary (Synthetic)
Browse sedimentary (synthetic) specimens identified by the Rock Identifier community.
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Opalite
Synthetic Opalite Glass / Opalized Glass
gemstone
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
gemstone
Painted River Rock
Anthropogenic-modified Siliciclastic Sedimentary Rock
Sedimentary
Lava Stone and Chakra Beads
Basalt (with various mineral/synthetic beads)
igneous
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
mineraloid (man-made)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
gemstone
Opalite
Synthetic opalescent glass
glass
Opalite
Synthetic Opalised Glass
glass
Opalite
Synthetic Opalised Glass
mineral
Opalite
Synthetic Opalized Glass
mineraloid (man-made)
Opalite
Synthetic Opalized Glass
gemstone
Opalite
Synthetic Opalite Glass
mineraloid (man-made)
Opalite
Synthetic Opalised Glass
Mineral (Synthetic / Man-made)
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Opalite
Synthetic Opalised Glass
mineral
Opalite
Synthetic Opalised Glass
mineraloid (synthetic)
Opalite (Man-made Glass)
Synthetic Opalised Glass
mineral
Ruby (Raw Corundum)
Al2O3 (Aluminum Oxide)
mineral
Painted River Rock
Artificially Coated Sedimentary Rock
sedimentary
Cubic Zirconia (Jewelry Setting)
Zirconium Dioxide (ZrO2)
gemstone
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Gemstone Ring
Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)
gemstone
Cubic Zirconia and Synthetic Ruby Jewelry
Cubic Zirconia (ZrO2) and Synthetic Corundum (Al2O3)
gemstone
Opalite
Synthetic glass / Opaque silicious glass
gemstone
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
mineral
Note on Image Identification: Textile
N/A (Anthropogenic material)
not a rock
Bituminous Coal
Organic-rich sedimentary rock (Complex hydrocarbons)
sedimentary
Emerald
Beryl (Be₃Al₂(SiO₃)‑₆) with Chromium/Vanadium impurities
mineral
Goldstone
Aventurine Glass (Man-made)
mineral
Opalite
Man-made glass (traditionally simulated Opal)
mineral
Emerald
Beryl, Be₃Al₂(SiO₃)₆, colored green mainly by chromium and/or vanadium
gemstone
Banded Black Onyx (Chalcedony)
Silicon Dioxide (SiO₂)
mineral
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
mineral
Silicon Carbide (Carborundum)
Silicon Carbide, SiC
mineral
Costume Jewelry with Synthetic Gemstones
Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)
mineral
Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)
Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)
mineral (synthetic)
Anthracite Coal
Anthracite (Carbon ≥ 86%)
sedimentary
Man-made Synthetic Material (Not a rock or mineral)
Polyester (Polyethylene terephthalate) / Faux Fur
Synthetic / Textile
Red gemstone ring, likely garnet or synthetic ruby
Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish
gemstone
Synthetic Costume Glove (Paws)
Polyethylene terephthalate (Polyester) & Polyurethane blend
Non-geological / Man-made textile
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)