Sea Glass
Silica (SiO2) - Amorphous
Mineral
Category
Manufactured Glass (Simulant)
Browse manufactured glass (simulant) specimens identified by the Rock Identifier community.
Learn about Manufactured Glass (Simulant) in the encyclopedia
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Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)
Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy
Mineral (synthetic) and Metal (precious/base)
Rhinestone (or glass crystal)
Silicon dioxide (if glass) / Various
Mineral/gemstone imitation
Cubic Zirconia (CZ)
Zirconium dioxide (ZrO2)
mineral
Clear Quartz (faceted) / Diamond Simulant
Silicon Dioxide (SiO2) / Cubic Zirconia (ZrO2)
gemstone
Sapphire
Corundum (Al2O3)
mineral
Colorless faceted gemstone, likely cubic zirconia
Cubic zirconia (synthetic ZrO₂), possibly glass or quartz
gemstone
Yellow jasper or polished yellow chalcedony
Microcrystalline quartz, SiO₂, likely iron-stained jasper/chalcedony
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Goldstone
Aventurine Glass (Man-made)
mineral
Pink Cubic Zirconia (CZ)
Zirconium Dioxide (ZrO2)
mineral (synthetic)
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Obsidian (Blue)
Volcanic Glass (SiO2)
igneous
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock
Black obsidian (probable)
Volcanic glass; primarily SiO₂-rich rhyolitic composition
igneous
Green glassy slag or manufactured glass bead
Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral
mineral
Tumbled mahogany obsidian
Volcanic glass, predominantly rhyolitic silica (SiO₂), with iron-oxide inclusions
igneous
Blue goldstone beads
Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli
mineral
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Synthetic Glass (Man-made)
Diamond (Set in jewelry)
Cubic Carbon (C)
mineral
Opalite
Man-made Opalized Glass (Synthetic Glass)
gemstone
Diamond (or Cut Gemstone / Cubic Zirconia)
Carbon (C)
gemstone
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid
Blue Goldstone
Synthetic glass with copper or cobalt/manganese inclusions
man-made glass
Opaline Glass (Opalite)
Synthetic Silicon Dioxide Glass
Mineraloid (Man-made)
Cobalt Blue Sea Glass
Amorphous Silica Glass (SiO2 + CoO)
mineraloid / anthropogenic material
Green Sea Glass
Man-made vitreous material (silica glass)
gemstone
Opalite
Synthetic Opalite (Man-made glass)
mineral
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
gemstone
Opalite
Synthetic glass / Opalized glass
gemstone
Opalite
Synthetic glass (SiO2 + metal additions)
mineraloid
Sea Glass
Amorphous silicon dioxide (Man-made glass weathered by nature)
mineral
Goldstone (aventurine glass)
Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone
gemstone
Opalite (Synthetic Opalized Glass)
Synthetic Silicon Dioxide (SiO2) glass
mineral
Goldstone
Aventurine Glass (Man-made glass with copper inclusions)
mineraloid / man-made glass
Zirconia (Ceramic) & Ion-X Glass
Zirconium Dioxide (ZrO2) and Ion-strengthened Aluminosilicate Glass
Synthetic Mineral / Glass
Man-made Crystal (Lead Glass)
Lead oxide-doped Silica Glass (approx. SiO2 + PbO)
Mineraloid/Synthetic Material
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Mineraloid / Synthetic Glass
White Quartz Star-cut crystal
Silicon Dioxide (SiO2)
mineral
Beads (likely glass or man-made material)
N/A (artificial material)
Man-made material, not a natural rock or mineral specimen
Clear quartz pebble or glass-like quartz specimen
Quartz (silicon dioxide, SiO₂)
mineral
Blue glass-like gemstone specimen (likely dyed or synthetic quartz)
Uncertain; possibly blue-dyed quartz or synthetic glass, not confidently identifiable from the image
gemstone