Blue Goldstone
Aventurine Glass
Man-made glass (often grouped with minerals in lapidary)
Category
Man Made Glass (Often Grouped With Minerals In Lapidary)
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
Learn about Man Made Glass (Often Grouped With Minerals In Lapidary) in the encyclopedia
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Opalite
Synthesized glass / Silicon dioxide glass
gemstone
Slag
Metallurgical Slag
igneous
Blue Obsidian (Cullet Glass)
Man-made silicate glass
mineral
Green Quartz / Chrysoprase / Sea Glass
Silicon Dioxide (SiO2)
mineral
Cullet Glass (Slag)
Amorphous Silicon Dioxide (Man-made)
Mineraloid
Small black stone fragment (possibly obsidian)
Unidentified dark rock; obsidian is volcanic glass (composition typically rhyolitic)
igneous
Opalite
Synthetic glass / Simulated opal
gemstone
Blue Obsidian
Volcanic Glass (Amorphous)
gemstone
Opalite
Synthetic glass / Opalized glass
gemstone
Opalite (likely man-made glass)
Opalite is a trade name for opalescent glass, not a natural mineral; composition is typically silica glass with additives
mineral
Pink Quartz / Sea Glass
Silicon Dioxide (SiO2)
mineral
Opalite
Synthetic opalescent glass
glass
Clear quartz sphere
Quartz (silicon dioxide, SiO₂)
mineral
Cullet Glass / Slag Glass
Amorphous silica glass
man-made glass / industrial byproduct
Opalite
Synthetic glass / Opalized glass
gemstone
Tumbled white chalcedony (likely milky quartz)
Chalcedony, microcrystalline quartz (SiO₂)
mineral
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
mineraloid / anthropogenic
Opalite
Man-made Glass (Synthetic Opalized Glass)
mineral
Slag Glass
Anthropogenic Amorphous Silicon Dioxide
mineral
Opalite
Man-made glass (traditionally simulated Opal)
mineral
Red glassy gemstone, possibly garnet
Unidentified red transparent material; garnet group (X₃Y₂(SiO₄)₃) is a possibility
gemstone
Opalite
Synthetic glass (SiO2 + impurities)
mineral
Opalite
Synthetic Opalized Glass
gemstone
Blue Slag Glass
Man-made Silicon Dioxide (Amorphous)
Anthropogenic (Man-made)
Opalite
Synthetic Glass (Simulated Opal)
gemstone
Opalite
Man-made opalized glass
mineral
Blue Goldstone
Man-made glass with cobalt and metal flecks
man-made glass
Opalite
Synthetic glass / Opaque silicious glass
gemstone
Opaline Glass (Opalite)
Synthetic Silicon Dioxide Glass
Mineraloid (Man-made)
Blue goldstone (man-made glass)
Copper-bearing aventurine glass; synthetic silicate glass
mineral
Sea Glass
Man-made silicate glass
gemstone
Goldstone
Aventurine Glass (Man-made)
mineral
Opalite (Synthetic Opalized Glass)
Synthetic Silicon Dioxide (SiO2) glass
mineral
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial byproduct)
mineraloid
Opalite
Synthetic Opalite (Man-made glass)
mineral
Goldstone (Brown)
Aventurine Glass (Silicon Dioxide infused with Copper crystals)
mineraloid (man-made glass)
Opalite
Man-made opalescent glass
gemstone
Tumbled quartz pebble
Quartz, silicon dioxide (SiO₂), likely milky quartz
mineral
Greenish Metamorphic Rock (likely containing epidote or chlorite)
Metamorphic rock, possibly epidosite or greenstone
Metamorphic
Opalite
Synthetic Opalite Glass / Opalized Glass
gemstone
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
metamorphic