Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
Category
Browse man made (synthetic rock) specimens identified by the Rock Identifier community.
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
Zinc Alloy (Silver-plated)
Zinc Alloy Casting (Zn-Al-Mg-Cu)
Asphalt Concrete (Bituminous Concrete)
Bituminous aggregate
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
Green Quartz / Chrysoprase / Sea Glass
Silicon Dioxide (SiO2)
Chrysocolla in Malachite
Cu2CO3(OH)2 (Malachite) / Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)
Yellow faceted gemstone, likely citrine or yellow sapphire
Uncertain; probable quartz (SiO₂) or corundum (Al₂O₃)
Clear quartz fragment
Quartz (silicon dioxide, SiO₂)
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Clear quartz crystal
Quartz (silicon dioxide, SiO₂)
Magnetic Hematite (Man-made)
Iron Oxide (Fe2O3) with Barium-Strontium Ferrite
Blue faceted gemstone, likely synthetic sapphire or blue glass
Corundum (Al₂O₃) if sapphire; identity cannot be confirmed visually
Sandstone Concretion
Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)
Aura Quartz (Titanium/Rainbow Quartz)
SiO2 (Silicon Dioxide) with metallic coating
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Goldstone (likely red/brown aventurine glass)
Man-made aventurine glass; copper-bearing silicate glass (not a natural mineral)
Libyan Desert Glass
Libyan Desert Glass (SiO2 with trace elements)
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
Blue glassy mineral fragment, possibly sodalite or dyed/cobalt glass
Uncertain; likely sodalite (Na₈Al₆Si₆O₂₄Cl₂) if natural, but vivid blue color may indicate cobalt-colored glass
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
Tumbled milky quartz (likely)
Quartz, silicon dioxide (SiO₂)
Diamond
Carbon (C)
Milky quartz (likely rough quartz crystal)
Quartz, silicon dioxide (SiO₂)
Blue glassy gemstone cabochon, likely dyed chalcedony or glass
Uncertain; possible dyed chalcedony (microcrystalline quartz, SiO₂)
Decorative gemstone bracelet or jewelry
Unidentifiable from the blurred image; likely colored glass or synthetic stones, possibly mixed gemstone beads
Aura Quartz (Pink/Rose Aura Quartz)
Silicon Dioxide (SiO2) bonded with Platinum and/or Silver
Chalcanthite (Likely Synthetic/Lab-Grown)
Hydrated copper(II) sulfate (CuSO4·5H2O)
Blue Goldstone
Aventurine Glass
Aqua Aura Quartz
Titanium/Gold-coated Silicon Dioxide (SiO2)
Polished black stone, likely black obsidian
Volcanic glass; predominantly rhyolitic silica glass (SiO₂-rich)
Polished milky quartz (likely quartz worry stone or wand)
Quartz, silicon dioxide (SiO₂)
White quartz pebble
Quartz (SiO₂), likely milky quartz
Green cabochon gemstone, likely aventurine or dyed chalcedony
Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony
Heart-shaped faceted gemstone pendant
Likely yellow quartz (citrine) or synthetic yellow stone, set in metal with small clear accent stones
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial byproduct)