Blue Goldstone
Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)
man-made glass
Category
Anthropogenic (Man Made Material Processed By Nature)
Browse anthropogenic (man made material processed by nature) specimens identified by the Rock Identifier community.
Learn about Anthropogenic (Man Made Material Processed By Nature) in the encyclopedia
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Opalite
Synthetic Silicon Dioxide (SiO2)
mineral
Rainbow Hematite (Titanium Coated)
Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating
mineral
Tumbled milky quartz
Quartz, silicon dioxide (SiO₂)
mineral
Blue-green cabochon, likely chalcedony or treated glass imitation
Cryptocrystalline quartz (chalcedony/possibly chrysoprase); identification uncertain from image
gemstone
Opalite
Man-made opalescent glass
gemstone
Opalite
Man-made opalized glass
mineral
Sea Glass
Man-made silicate glass
gemstone
Paving-concrete aggregate with a rounded stone
Polymictic gravel aggregate; the central clast appears to be weathered sandstone or volcanic rock
sedimentary
Tumbled gray stone, likely quartz-rich pebble
Probable microcrystalline quartz/chalcedony (SiO₂), possibly gray jasper or quartzite
mineral
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock
Mystic Topaz
Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Aura Quartz (Pink/Rose Aura Quartz)
Silicon Dioxide (SiO2) bonded with Platinum and/or Silver
mineral
Man-made Crystal (Lead Glass)
Lead oxide-doped Silica Glass (approx. SiO2 + PbO)
Mineraloid/Synthetic Material
Likely clear quartz pebble or glassy quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Metal Alloy / Manufactured Artifact
Mystic Topaz
Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)
mineral
Ferrous Slag
Iron/Steel Slag (Complex Calcium-Alumino-Silicates)
Anthropgenic (Industrial Byproduct)
Hematite
Iron(III) oxide (Fe2O3)
mineral
Tumbled clear quartz (rock crystal)
Quartz, silicon dioxide (SiO₂)
mineral
Clear quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
mineral
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
mineral
Diamond (or Simulant)
Carbon (C)
gemstone
Red glassy cabochon, likely synthetic ruby or red glass
Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass
gemstone
Flint or chert, possibly a knapped stone tool
Microcrystalline quartz (SiO₂), commonly chalcedony with possible carbonaceous impurities
sedimentary
Porcelain Tile (Sandstone-look)
Man-made Ceramic (resembling Quartz-rich Sandstone)
sedimentary (imitation)
Turquoise-style beaded bracelet
Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O; possibly dyed or composite beads
mineral
Opalite
Synthetic Opalite Glass
mineraloid (man-made)
Fossiliferous limestone with colonial coral
Calcite (CaCO₃) limestone containing fossil tabulate or rugose coral colonies
fossil
Synthetic Resin / Plastic Figurine
Synthetic Polymer (Copolymer of Polyethylene or Resin)
Mineraloid-like Synthetic Material
Bouncy Ball (Synthetic Rubber Polymer)
Polybutadiene / Ethylene Vinyl Acetate (EVA)
Synthetic material (Not a rock or mineral)
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Sea Glass
Silicon dioxide (mostly)
mineral
Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye
mineral
Aura Quartz (Titanium/Gold coated)
Silicon Dioxide (SiO2) with metallic vapor deposition
mineral
Sandstone (with concrete/human-made layer)
Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)
sedimentary
Quartz pebble (Quartztite fragment)
Silicon Dioxide (SiO2)
mineral
Cubic Zirconia (Simulated Diamond)
Cubic Zirconia (ZrO2)
mineral
Likely tumbled or cut quartz/chalcedony fragment
Silicon dioxide (SiO₂), probably microcrystalline quartz or quartz
mineral
Asphalt Chunk
Asphalt concrete
man-made composite