Opalite
Man-made opalescent glass
gemstone
Category
Man Made Mineral Simulant (Glass)
Browse man made mineral simulant (glass) specimens identified by the Rock Identifier community.
Learn about Man Made Mineral Simulant (Glass) in the encyclopedia
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Blue glassy gemstone-like specimen
Indeterminate; possibly dyed or treated turquoise, blue apatite, or man-made glass
gemstone
Sea Glass
Man-made silicate glass
sedimentary
One Pound Coin (UK)
Nickel-Brass Alloy (Cu-Zn-Ni)
mineral
Sea Glass
Man-made silicate glass
gemstone
Opalite
Synthetic Glass (SiO2 + impurities)
mineral
Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)
Silicon Dioxide (SiO2) with inclusions/dye
gemstone
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (SiO2) with metallic oxide impurities
mineraloid
Milky quartz (likely)
Quartz, silicon dioxide (SiO₂)
mineral
Tumbled Clear Quartz/Rock Crystal
Silicon Dioxide (SiO2)
mineral
Blue Slag Glass
Man-made Silicon Dioxide (Amorphous)
Anthropogenic (Man-made)
Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
mineral
Tumbled milky quartz
Quartz — silicon dioxide (SiO₂), cryptocrystalline or microcrystalline variety possible
mineral
Not a geological specimen
N/A (man-made object)
N/A
Opalite
Synthetic Opalized Glass / Man-made Glass
gemstone
Dragon's Breath (Mexican Opal Glass)
Artisan Foil Glass (SiO2 based)
mineraloid
Quartz crystal fragment (likely milky quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Tumbled milky quartz
Quartz (SiO₂), cryptocrystalline-to-massive variety
mineral
Faceted colorless gemstone, likely quartz or glass imitation
Most likely quartz (SiO₂), though the strong glare and visible facet pattern could indicate cubic zirconia or lead glass
gemstone
Green Quartz / Chrysoprase / Sea Glass
Silicon Dioxide (SiO2)
mineral
Blue Goldstone
Aventurine Glass
man-made glass
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂), opaque-to-translucent milky variety
mineral
Metal Chain Belt with Square Plates
Not applicable (man-made)
Man-made Object (Metalwork)
Slag Glass
Amorphous Silicate (Man-made)
industrial byproduct
Clear Quartz Sphere (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
mineral
Sea Glass
Amorphous silicon dioxide (man-made glass weathered by nature)
mineral
Opalite
Synthetic Glass (Simulated Opal)
gemstone
Cullet Glass (Slag)
Amorphous Silicon Dioxide (Man-made)
Mineraloid
Blue Slag Glass
Anthropogenic Amorphous Silicon Dioxide
mineral
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
mineraloid / anthropogenic
Blue Goldstone
Man-made glass with cobalt and metal flecks
man-made glass
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Byproduct)
mineraloid
Clear quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Likely tumbled red mineral or glass imitation
Indeterminate; possibilities include red jasper (microcrystalline quartz, SiO₂) or dyed chalcedony
mineral
Milky quartz (likely rough quartz crystal)
Quartz, silicon dioxide (SiO₂)
mineral
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Tumbled milky quartz
Quartz, silicon dioxide (SiO₂)
mineral
Costume Jewelry with Synthetic Gemstones
Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)
mineral
Opalite
Synthetic Opalite Glass
mineraloid (man-made)
Colorless faceted gemstone, likely glass or quartz
Uncertain; possibly quartz (SiO₂), but the strong uniform brilliance and apparent molded/faceted form may indicate leaded glass or cubic zirconia
gemstone