Sea Glass
Amorphous silicon dioxide (Man-made glass weathered by wave action)
Category
Browse mineral (man made glass, not natural) specimens identified by the Rock Identifier community.
Sea Glass
Amorphous silicon dioxide (Man-made glass weathered by wave action)
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (SiO2) with metallic oxide impurities
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Byproduct)
Cullet Glass (Slag)
Amorphous Silicon Dioxide (Man-made)
Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
Dragon's Breath (Mexican Opal Glass)
Artisan Foil Glass (SiO2 based)
Opalite
Opalescent Glass (SiO2 + coloring agents)
Cubic Zirconia (Jewelry Setting)
Zirconium Dioxide (ZrO2)
Opalite
Synthetic Glass (Simulated Opal)
Silicon Carbide (Carborundum)
Silicon Carbide (SiC) / Moissanite (natural)
Sea Glass
Amorphous Silicon Dioxide (SiO2)
Tumbled white chalcedony (likely milky quartz)
Chalcedony, microcrystalline quartz (SiO₂)
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂), opaque-to-translucent milky variety
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
Opalite (likely man-made opalescent glass)
Opalite; not a true mineral, typically synthetic opalescent glass (silica-based)
Aventurine Quartz
Silicon Dioxide (SiO2) with Fuchsite inclusions
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
Diamond
Native Carbon (C)
Blue Obsidian (Cullet Glass)
Silicon Dioxide (Amorphous Glass)
Polished milky quartz (likely quartz worry stone or wand)
Quartz, silicon dioxide (SiO₂)
White quartz pebble
Quartz (SiO₂), likely milky quartz
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
Opalite
Synthetic Opalite Glass
Green glass sphere/marble
Soda-lime glass (primarily SiO2, Na2O, CaO)
Slag Glass
Vitreous Silicate Residue
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
Mystic Topaz (Treated Quartz or Topaz)
Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating
Red goldstone beads
Goldstone (man-made copper-bearing glass; not a natural mineral)
Goldstone
Aventurine glass
White sea glass (naturally frosted glass fragment)
Man-made silicate glass, typically soda-lime glass; not a mineral or rock
Opalite
Man-made Glass (SiO2 + additives)
Goldstone
Avventurina (Man-made Glass with Copper inclusions)
Pink Quartz / Sea Glass
Silicon Dioxide (SiO2)
Goldstone beads (likely brown goldstone)
Man-made copper-bearing glass; not a natural mineral. Often sold as “aventurine glass.”
Opalite
Synthetic Opalized Glass
Opalite
Synthetic Opalised Glass
Beads (likely glass or man-made material)
N/A (artificial material)
Blue opalite glass (likely man-made)
Opalite glass; a silica-based amorphous glass, not natural opal
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)
Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)
Tumbled quartz pebble
Quartz, silicon dioxide (SiO₂), likely milky quartz
Asphalt (Road Aggregate)
Bituminous conglomerate