Opalite glass sphere (likely synthetic imitation)
Man-made opalescent glass; not natural opal
Category
Browse mineral (synthetic glass) specimens identified by the Rock Identifier community.
Opalite glass sphere (likely synthetic imitation)
Man-made opalescent glass; not natural opal
Tumbled opalite (likely synthetic glass)
Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species
Amethyst quartz cluster
Quartz, SiO₂; purple variety amethyst
Red faceted gemstone, likely synthetic ruby
Corundum (Al₂O₃), chromium-colored; possibly flame-fusion synthetic ruby
Clear faceted gemstone in a metal jewelry setting (likely imitation glass or cubic zirconia)
Unidentified transparent faceted stone; possibly cubic zirconia (ZrO₂) or glass
Blue glassy-looking specimen, possibly dyed or coated mineral
Not identifiable from the photograph; possibilities include dyed quartz or glassy slag, but composition cannot be established visually.
Green gemstone ring, likely emerald simulant or jade
Uncertain; possible beryl (emerald, Be₃Al₂Si₆O₁₈) or jadeite (NaAlSi₂O₆), but the blurred image may show synthetic glass or another treated stone
Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Blue-and-white opalite sphere
Opalite (commercial synthetic or glass-based imitation; not true opal), typically silica glass or synthetic opalescent material
Pink-red faceted gemstone, possibly synthetic corundum or spinel
Uncertain; possible ruby (corundum, Al₂O₃) or red spinel (MgAl₂O₄)
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
Strawberry Quartz and Rose Quartz
Silicon Dioxide (SiO2) with inclusions
Red garnet cabochon-style earrings
Likely almandine garnet (Fe₃Al₂(SiO₄)₃); the image alone cannot confirm the stone or whether it is natural or synthetic.
Smoky Quartz
Silicon Dioxide (SiO2)
Blue slag glass / industrial glass fragment
Artificial silicate glass, composition variable; likely copper- or cobalt-colored furnace slag
Polished purple gemstone, likely amethyst
Amethyst: purple quartz, silicon dioxide (SiO₂)
Red gemstone ring, likely garnet or synthetic ruby
Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish
Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
Ruby ring
Corundum (Al₂O₃), red variety colored mainly by chromium
Cubic Zirconia
Zirconium dioxide (ZrO2)
Black polished stone beads, likely black onyx or agate
Likely chalcedony (microcrystalline quartz, SiO₂); exact material cannot be confirmed from the image
Black cabochon pendant, likely onyx or black glass
Most likely black chalcedony (microcrystalline quartz, SiO₂); the surrounding stones may be cubic zirconia or glass
Green faceted gemstone, likely synthetic glass or chrome-dyed stone
Undetermined; possibilities include green tourmaline, synthetic emerald, glass, or dyed quartz
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
Pink quartz (likely rose quartz)
Quartz, silicon dioxide (SiO₂), likely rose quartz; possibly lab-created or treated
Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
Green cut gemstone, likely synthetic emerald or glass imitation
Undetermined; natural emerald is beryl (Be₃Al₂Si₆O₁₈), while the vivid, very uniform appearance may indicate imitation material
Blue aventurine quartz (likely)
Quartz, silicon dioxide (SiO₂), probably blue aventurine variety
Opalite
Man-made Opalized Glass (Synthetic Glass)
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
Diamond (or Diamond Simulant / Melee)
Carbon (C) / or synthetic cubic zirconia (ZrO2)
Amethyst cabochon
Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation
Blue glassy mineral specimen, possibly dyed or synthetic
Uncertain; possible blue fluorite (CaF₂), dyed chalcedony, or man-made glass
Blue Quartz / Glass Gemstone Pendant
SiO2 (Silicon Dioxide) or Synthetic Glass
Tiger’s-eye
Chatoyant quartz (SiO₂), commonly pseudomorphic quartz after crocidolite
Faceted quartz crystal sphere (likely rock crystal)
Quartz, silicon dioxide (SiO₂)
Carved labradorite fish
Labradorite, calcium-rich plagioclase feldspar (approximately (Ca,Na)(Al,Si)₄O₈)
Goldstone
Avventurina (Man-made Glass with Copper inclusions)
Amethyst (Tumbled)
Silicon Dioxide (SiO2) with Fe3+ impurities
Raw ruby (corundum)
Ruby variety of corundum, aluminum oxide (Al₂O₃), colored chiefly by chromium
Red cut gemstone, likely synthetic ruby
Corundum (Al₂O₃); possibly lab-grown ruby or red glass imitation
Red/pink faceted gemstone, likely synthetic ruby or red glass
Corundum (Al₂O₃) if ruby; identity cannot be confirmed visually