Opalite (Synthetic Opalized Glass)
Synthetic Silicon Dioxide (SiO2) glass
mineral
Category
Man Made Glass (Not A Natural Rock Or Mineral)
Browse man made glass (not a natural rock or mineral) specimens identified by the Rock Identifier community.
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Opalite
Synthetic Glass (SiO2 + impurities)
mineral
Concrete
Anthropogenic Conglomerate
sedimentary
Decorative mosaic cross containing mixed rock and glass fragments
Polychrome aggregate; likely quartz, feldspar, marble, granite, and assorted colored glass
mineral
Opalite Egg
Synthetic Glass (Simulated Opal)
mineral
Opalite
Synthetic Glass (Hydrated Silica Simulant)
mineral
Blue Obsidian
Volcanic Glass (Silica, SiO2)
gemstone
Sea Glass
Man-made silicate glass
sedimentary
Goldstone (likely red/brown aventurine glass)
Man-made aventurine glass; copper-bearing silicate glass (not a natural mineral)
mineral
Dyed or synthetic turquoise-blue glass-like specimen
Likely man-made colored glass or resin; exact identification requires testing
mineral
Iron-rich slag or ironstone; appearance is not diagnostic
Likely iron-oxide-rich material (hematite, Fe₂O₃, and/or magnetite, Fe₃O₄); possibly smelting slag
mineral
Blue glassy gemstone-like specimen
Indeterminate; possibly dyed or treated turquoise, blue apatite, or man-made glass
gemstone
Opalite glass sphere (likely synthetic imitation)
Man-made opalescent glass; not natural opal
mineral
Opalite
Synthetic Silicon Dioxide (SiO2)
mineral
Small gold-colored jewelry piece with clear stones
Likely a metal setting holding small faceted gemstones; the stones cannot be identified from the image.
gemstone
Opaline Glass (Opalite)
Synthetic Silicon Dioxide Glass
Mineraloid (Man-made)
Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)
Silicon Dioxide (SiO2) with inclusions/dye
gemstone
Blue glass-like tumbled specimen
Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image
mineral
Blue Diamond
Carbon with Boron impurities (C)
gemstone
Milky quartz (likely rough quartz crystal)
Quartz, silicon dioxide (SiO₂)
mineral
Obsidian
Volcanic Glass
igneous
Opalite
Synthetic Glass / Man-made Opal Simulant
gemstone
Opalite
Synthetic Glass (Silica-based)
gemstone
Obsidian
Volcanic Glass
igneous
Opalite
Man-made Opalized Glass (Synthetic Glass)
gemstone
Asphalt (Road Aggregate)
Bituminous conglomerate
sedimentary
Green sea glass (likely)
Man-made glass, likely soda-lime silicate glass; not a natural mineral or rock
mineral
Aggregate Concrete
Anthropogenic Conglomerate (Technosol)
sedimentary
Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Mineraloid (Man-made Glass)
Slag Glass
Vitreous Silicate Residue
industrial byproduct (anthropogenic rock)
Sea Glass
Man-made silicate glass
sedimentary
Goldstone
Man-made glass infused with copper particles
gemstone
Opalite
Synthetic Opalised Glass
mineral
Opalite
Synthetic Glass (Simulated Opal)
gemstone
Diamond (or Simulant)
Carbon (C) or relevant simulant formula (e.g., ZrO2 for Cubic Zirconia)
gemstone
Opalite
Synthetic Opalised Glass
glass
Costume Jewelry with Synthetic Gemstones
Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)
mineral
Rock crystal quartz fragments
Quartz (silicon dioxide, SiO₂)
mineral
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Blue goldstone beads
Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli
mineral
Sea Glass
Amorphous silicon dioxide (man-made glass weathered by nature)
mineral
Obsidian
Volcanic glass
igneous