Opalite
Synthetic Opalite Glass
mineraloid (man-made)
Category
Mineraloid (Man Made Glass)
Browse mineraloid (man made glass) specimens identified by the Rock Identifier community.
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Opalite
Synthetic Opalized Glass (SiO2 + additives)
mineraloid (man-made)
Man-made Glass (Tumbled/Shaped)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Mineraloid (synthetic)
Green Slag
Anthropogenic Silicate Glass
Mineraloid (Industrial byproduct)
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Mineraloid / Industrial Byproduct
Blue Obsidian (Cullet Glass)
Man-made silicate glass
mineral
Opalite
Synthetic Opalized Glass
mineraloid (man-made)
Opalite
Synthetic glass / Opaque silicious glass
gemstone
Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)
Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)
mineraloid / industrial byproduct
Synthetic Resin Charm (Seal Shape)
Polymer Resin with plastic glitter / Polyethylene terephthalate glitters
Synthetic material (Not a rock or mineral)
Opalite
Synthetic glass (SiO2 + impurities)
mineral
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
mineraloid (man-made)
Opalite
Man-made opalized glass
mineral
Goldstone
Aventurine Glass (Man-made)
mineral
Sea Glass (specifically Frosted White)
Amorphous Silica (substance: Sodium-calcium silicate glass)
Mineraloid (Anthropogenic/Man-made rock)
Sea Glass
Man-made silicate glass
sedimentary
Sea Glass
Man-made silicate glass
mineral
Sea Glass
Man-made silicate glass
mineral
Sea Glass
Man-made silicate glass
sedimentary
Blue Goldstone
Man-made glass infused with copper crystals
mineral
Sea Glass
Man-made silicate glass
mineral
Sea Glass
Amorphous silicon dioxide
mineral
Opalite
Synthesized glass / Silicon dioxide
gemstone
Sea Glass
Man-made silicate glass
mineral
Small black stone fragment (possibly obsidian)
Unidentified dark rock; obsidian is volcanic glass (composition typically rhyolitic)
igneous
Obsidian
Volcanic Glass
igneous
Sea Glass
Man-made silicate glass
mineral
Sea Glass
Man-made silicate glass
sedimentary
Sea Glass
Man-made silicate glass
sedimentary
Man-made Crystal (Lead Glass)
Lead oxide-doped Silica Glass (approx. SiO2 + PbO)
Mineraloid/Synthetic Material
Sea Glass
Man-made silicate glass
gemstone
Obsidian
Volcanic Glass
igneous
Opalite
Synthetic Opalite Glass / Opalized Glass
gemstone
Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)
Silicon Dioxide (SiO2) with inclusions/dye
gemstone
Blue Obsidian
Volcanic Glass (Amorphous)
gemstone
Blue crystal pendant (likely blue glass or synthetic crystal)
Not identifiable from the image; possibly synthetic quartz or glass, rather than a natural mineral
gemstone
Sea Glass
Silicon dioxide (mostly)
mineral
Green Glass (often marketed as 'Obsidian' or 'Green Quartz')
Amorphous Silica (SiO2) with copper or chromium additives
Mineraloid (Man-made)
Blue opalescent glass-like gemstone (possibly imitation opalite)
Likely man-made opalite glass; composition varies, typically silica-based glass
gemstone
Sea Glass
Man-made vitreous material
mineral
Sea Glass
Man-made vitreous material
gemstone
Slag Glass
Amorphous Silicate (Man-made)
industrial byproduct