Slag (Industrial Glass)
Artificial Vitreous Silicate
Category
Browse man made material (metal) specimens identified by the Rock Identifier community.
Slag (Industrial Glass)
Artificial Vitreous Silicate
Green aventurine pendant (likely)
Quartz, SiO₂, with green fuchsite inclusions (aventurescent quartz)
Granite
Felsic intrusive igneous rock
Slate
Metamorphic Pelitic Rock
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Possible iron-rich meteorite fragment
Unidentified Fe–Ni meteoritic material; identification cannot be confirmed from this blurry image
Gemstone stud earrings, likely set with clear stones
The stones may be diamond (carbon, C) or colorless cubic zirconia (ZrO₂); the image is insufficient to distinguish them.
Blue Goldstone
Aventurine Glass (SiO2 with Cobalt/Copper inclusions)
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
Slag (Industrial Glass Slag)
Amorphous Silicate Glass (often containing Al, Ca, Mg, and Ti oxides)
Diamond (in a gold setting)
Carbon (C)
Green aventurine pendant
Quartz variety, SiO₂, colored mainly by fuchsite or other chromium-bearing mica inclusions
Polished amethyst-bearing quartz
Quartz, SiO₂; purple coloration from irradiation and trace iron
Diamond
Native Carbon (C)
Garnet-set butterfly brooch
Likely almandine or pyrope garnet, iron–aluminum silicate (Fe₃Al₂Si₃O₁₂ or Mg₃Al₂Si₃O₁₂)
Copper
Native Copper (Cu)
Slag (Industrial Glassy Byproduct)
Anthropogenic silicate byproduct (Slag)
Weathered basalt (likely vesicular basalt)
Basalt; chiefly plagioclase feldspar, pyroxene, and commonly olivine, with iron-oxide alteration
Sandstone
Arenite (SiO2 based)
Ironstone (Limonitic/Hematitic Sandstone)
Ferruginous sandstone (predominantly Fe2O3 and FeO(OH))
Turquoise inlay ring
Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O
Blue cabochon ring stone, likely lapis lazuli or blue chalcedony
Uncertain from image; possible lazurite-bearing lapis lazuli (Na₃Ca(Si₃Al₃)O₁₂S) or cryptocrystalline quartz (SiO₂)
Possible iron meteorite
Fe–Ni iron meteorite, possibly an ordinary chondrite or weathered iron-rich specimen
Weathered gold-bearing quartz vein fragment
Quartz (SiO₂) with probable iron oxides and sulfide/mineral inclusions
Cut faceted gemstone, possibly diamond or quartz
Uncertain from the blurred image; diamond is crystalline carbon (C), while quartz is silicon dioxide (SiO₂)
Aura Quartz Bead
Silicon dioxide (SiO2) with metal coating
Granite Pebble
Granite (Felsic Plutonic Rock)
Chert (Flint)
Silicon Dioxide (SiO2)
Titanium Quartz (Aura Quartz)
Silicon Dioxide (SiO2) treated with Titanium
Granite
Intrusive Igneous Rock
Cobalt Glass Slug (Man-made Glass)
Amorphous Silica with Cobalt Oxide (SiO2 + CoO)
Chert (White Chert/Flint)
Microcrystalline Quartz (SiO2)
Chert (variations include Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Red gemstone ring, possibly synthetic ruby or red glass
Unidentified red stone; ruby is corundum (Al₂O₃), but the image cannot confirm its identity
Diamond jewelry pendant or cluster
Diamond, crystalline carbon (C), likely mounted in metal
Faceted blue gemstone, likely blue topaz or synthetic spinel
Topaz (Al₂SiO₄(F,OH)₂) or synthetic spinel (MgAl₂O₄); image insufficient for certainty
Slag (Industrial Byproduct)
Ferrous/Non-ferrous Silicate
Gemstone rings (stones not reliably identifiable)
The pale stone may be quartz or another translucent gem; the red stone may be ruby, garnet, or synthetic corundum. Image detail is insufficient for identification.
Red gemstone ring, likely synthetic ruby or garnet
Ruby: corundum (Al₂O₃); possible alternative: almandine garnet (Fe₃Al₂(SiO₄)₃)
Limonite (Iron Stone/Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
Vesicular basalt (scoria-like volcanic rock)
Vesicular basalt; predominantly plagioclase, pyroxene, and volcanic glass, with possible iron oxides
Faceted gemstone ring, likely smoky quartz or garnet in a metal setting
Not determinable from the photograph; possible quartz (SiO₂) or garnet-group silicate