Blue Sapphire (Synthetic or Man-made Glass Imitation)
Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic
Category
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
Blue Sapphire (Synthetic or Man-made Glass Imitation)
Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic
Crackle Glass (Simulated Gemstone)
Amorphous Solid (SiO2)
Carved serpentine pendant
Serpentine-group minerals, commonly antigorite/lizardite (Mg₃Si₂O₅(OH)₄), possibly mixed with chlorite or other inclusions
Chalcedony on Matrix
Silicon Dioxide (SiO2)
Dyed or synthetic turquoise-blue glass-like specimen
Likely man-made colored glass or resin; exact identification requires testing
Stainless Steel (Polished)
Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)
Likely polished quartz or glass-like mineral cabochon
Probably quartz (SiO₂), though the image cannot exclude man-made glass
Titanium Aura Quartz
Titanium bonded Silicon Dioxide (SiO2 + Ti)
Goldstone (Brown)
Aventurine glass
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
Blue Crackle Quartz (Dyed Quarzite)
Silicon Dioxide (SiO2) with artificial dye
White pebble, likely quartz or calcite
Indeterminate from image; possible microcrystalline quartz (SiO₂) or calcite (CaCO₃)
Diamond
Native Carbon (C)
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Aura Quartz
Titanium or Gold bonded Silicon Dioxide (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Titanium Aura Quartz
Silicon Dioxide (SiO2) coated with Titanium and Niobium
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Polished gemstone tower assortment
Primarily quartz varieties and simulants; apparent amethyst (SiO₂), rose quartz (SiO₂), clear quartz (SiO₂), fluorite (CaF₂), sodalite, malachite, and possibly dyed or composite stones
Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
Milky Quartz with Chlorite inclusion
Silicon Dioxide (SiO2) with Chlorite group inclusions
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
Red-orange cabochon, likely carnelian or glass imitation
Carnelian: chalcedony (microcrystalline SiO₂), commonly iron-colored
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Malachite
Malachite (Cu2CO3(OH)2)
Asphalt Chunk
Asphalt concrete
Asphalt Chunk (Bituminous Concrete)
Aggregated Bitumen / Artificial Breccia
Milky Quartz with Chlorite inclusions
Silicon Dioxide (SiO2) with Chlorite group minerals
Tumbled green glassy mineral, possibly aventurine or fluorite
Uncertain; likely quartz variety (aventurine quartz, SiO₂) or green fluorite (CaF₂)
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Polished greenstone/serpentine pebble (probable)
Serpentinite, dominated by serpentine-group minerals (lizardite/chrysotile); possible accessory olivine or chlorite
Rainbow Hematite Ring
Iron(III) oxide (Fe2O3) with thin-film coating
Orthoclase Feldspar (Sunstone variety)
KAlSi3O8 (Potassium Aluminum Silicate)
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Unidentifiable Rock Fragment
Vesicular basalt (weathered scoria)
Scoriaceous basalt; chiefly plagioclase, clinopyroxene, olivine, and iron-titanium oxides
Brick fragment (Man-made material)
N/A (Fired clay)
Colorless faceted quartz-like gemstone
Likely quartz (SiO₂), though the appearance may also indicate man-made glass or cubic zirconia
Blue chalcedony (likely dyed or treated)
Microcrystalline quartz, SiO₂ (chalcedony)
Moonstone (specifically Rainbow Moonstone / White Labradorite)
White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)
Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)
Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)
Aluminum Slag
Anthropogenic Aluminum (Al)