Opalite
Synthetic Silicon Dioxide (SiO2)
mineral
Category
Mineral (Man Made Glass)
Browse mineral (man made glass) specimens identified by the Rock Identifier community.
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Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Clear quartz crystal (likely)
Quartz, silicon dioxide (SiO₂)
mineral
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
gemstone
Small rounded mineral pebble, possibly quartz
Uncertain; likely microcrystalline or crystalline SiO₂ (quartz), potentially with iron-oxide staining
mineral
Polished milky quartz (likely quartz worry stone or wand)
Quartz, silicon dioxide (SiO₂)
mineral
White quartz pebble
Quartz (SiO₂), likely milky quartz
mineral
Diamond (or Simulant)
Carbon (C)
gemstone
Likely tumbled or cut quartz/chalcedony fragment
Silicon dioxide (SiO₂), probably microcrystalline quartz or quartz
mineral
Opalite (Man-made Glass)
Synthetic Opalised Glass
mineral
Green glass-like mineral specimen, likely fluorite
Fluorite (calcium fluoride, CaF₂), if natural; appearance may also indicate colored glass
mineral
Opalite
Synthetic Glass (Hydrated Silica Simulant)
mineral
Opalite
Synthetic Glass (Silica-based)
gemstone
Opaline Glass (Opalite)
Synthetic Silicon Dioxide Glass
Mineraloid (Man-made)
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Man-made)
mineraloid
Tumbled quartz pebble
Quartz, silicon dioxide (SiO₂), likely milky quartz
mineral
Opalite
Man-made Glass (SiO2 + additives)
mineraloid (synthetic)
Silicon Carbide (Carborundum)
Silicon Carbide (SiC) / Moissanite (natural)
mineral
Green Sea Glass
Man-made silicate glass (weathered)
sedimentary
Slag Glass
Vitreous Silicate Residue
industrial byproduct (anthropogenic rock)
Blue Glass or Slag Glass
Amorphous Silica (Anthropogenic Glass)
mineral
White quartz pebble or chip
Quartz (silicon dioxide, SiO₂), possibly milky quartz
mineral
Unidentified translucent crystal/mineral fragment
Likely quartz (SiO₂), but visual identification is uncertain
mineral
Opalite
Synthetic Opalised Glass
mineral
Opalite (Synthetic Moonstone/Sea Opal)
Silicon Dioxide (SiO2) glass with metallic inclusions
Synthetic/Man-made Glass
Opalite
Man-made Opalized Glass (Synthetic Glass)
gemstone
Pink Quartz / Sea Glass
Silicon Dioxide (SiO2)
mineral
Tumbled clear quartz (rock crystal)
Quartz, silicon dioxide (SiO₂)
mineral
Opalite
Synthetic Opalite Glass
mineraloid (man-made)
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Synthetic Glass (Man-made)
Clear quartz crystal (likely)
Quartz, silicon dioxide (SiO₂)
mineral
Quartz (likely milky quartz or quartz glass-like fragment)
Quartz, silicon dioxide (SiO₂)
mineral
Black tumbled stone, possibly obsidian
Obsidian (volcanic glass; predominantly SiO₂), identification uncertain from image
igneous
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
mineral
Slag Glass
Anthropogenic Amorphous Silicon Dioxide
mineral
Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Mineraloid (Man-made Glass)
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Asphalt Concrete
Bituminous conglomerate
sedimentary
Terrazzo (Man-made Composite)
Cementitious or Resin-bound Lithic Composite
sedimentary (artificial)
Tumbled clear quartz (rock crystal)
Quartz, silicon dioxide (SiO₂)
mineral
Green Sea Glass
Man-made vitreous material (silica glass)
gemstone
Likely clear quartz pebble or glassy quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral