Blue crystal pendant (likely blue glass or synthetic crystal)
Not identifiable from the image; possibly synthetic quartz or glass, rather than a natural mineral
Category
Browse synthetic polymer (polylactic acid) specimens identified by the Rock Identifier community.
Blue crystal pendant (likely blue glass or synthetic crystal)
Not identifiable from the image; possibly synthetic quartz or glass, rather than a natural mineral
Opalite
Synthetic Opalite Glass / Opalized Glass
Faceted Gemstones (Mixed)
Various (e.g., Corundum, Beryl, Quartz, or synthetic equivalents)
Wollastonite
Calcium Inosilicate, CaSiO3
Red faceted gemstone, likely synthetic ruby
Corundum (Al₂O₃); ruby is red chromium-bearing corundum
Ruby ring
Corundum (Al₂O₃), red variety colored mainly by chromium
Amber
Succinates (fossilized tree resin), approximately C10H16O
Clear faceted gemstone in an ornate metal bracelet
Unidentified transparent faceted stone; possibilities include quartz (SiO₂), zircon (ZrSiO₄), or glass—image alone cannot distinguish them
Cubic Zirconia (Jewelry Setting)
Zirconium Dioxide (ZrO2)
Gemstone Ring
Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)
Red gemstone ring, likely synthetic ruby or red glass
Unidentified red faceted stone; ruby is corundum (Al₂O₃)
Red cabochon gemstone ring (likely ruby or red spinel; identity unconfirmed)
Possibly corundum (ruby, Al₂O₃) or spinel (MgAl₂O₄); visual identification alone cannot distinguish these from glass or synthetic stones.
Small colored gemstone or glass cabochons (uncertain)
Not identifiable from the image; the pieces may be colored glass or synthetic stones rather than natural minerals.
Red faceted gemstone, likely synthetic ruby
Corundum (Al₂O₃), chromium-colored; possibly flame-fusion synthetic ruby
Ruby (Raw Corundum)
Al2O3 (Aluminum Oxide)
Cubic Zirconia and Synthetic Ruby Jewelry
Cubic Zirconia (ZrO2) and Synthetic Corundum (Al2O3)
Sapphire
Corundum (Al2O3)
Red faceted gemstone, possibly synthetic ruby or red glass
Unidentified red gem; ruby is corundum (Al₂O₃), while glass is amorphous silicate
Blue-green faceted pendant stone
Undetermined; possibly synthetic glass or a blue-green gemstone such as topaz or quartz
Opalite
Man-made glass (traditionally simulated Opal)
Colorless faceted gemstone, likely cubic zirconia
Synthetic cubic zirconia (ZrO₂), tentative; possibly diamond or synthetic moissanite
Faceted purple-blue beads, likely synthetic glass or treated gemstone
Indeterminate; possible synthetic corundum, synthetic spinel, or dyed quartz (SiO₂)
Silicon Carbide (Carborundum)
Silicon Carbide, SiC
Amber (and Cubic Zirconia)
Fossilized Tree Resin
Opalite
Synthetic glass / Opaque silicious glass
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
Note on Image Identification: Textile
N/A (Anthropogenic material)
Amber
Succinite (Fossilized Resin)
Red glassy mineral specimen, likely synthetic ruby or red spinel
Most consistent with synthetic corundum (Al₂O₃, ruby) or synthetic spinel (MgAl₂O₄); exact identification requires testing
Goldstone
Aventurine Glass (Man-made)
Opalite
Synthetic Glass (Simulated Opal)
Diamond (or Diamond Simulant)
C (Carbon) or synthetic equivalent
Opalite
Synthetic glass / Opalized glass
Opalite
Synthetic Glass (Simulated Opal)
Opalite Egg
Synthetic Glass (Simulated Opal)
Opalite
Synthetic Glass (SiO2 + impurities)
Opalite
Synthetic Silicon Dioxide (SiO2)
Small blue cut gemstone, possibly synthetic spinel or glass; species cannot be determined from the photo
Undetermined; blue synthetic spinel (MgAl₂O₄) is one possibility
Red gemstone ring; likely synthetic ruby or red glass
Undetermined from the image; ruby is corundum (Al₂O₃), while red glass is amorphous silicate
Opalite-style glass pendant
Man-made opalescent glass (not natural opal)
Blue-green cut gemstone, possibly aquamarine
Unconfirmed; aquamarine is blue-green beryl, Be₃Al₂Si₆O₁₈
Red cabochon gemstone ring (likely glass or synthetic stone)
Undetermined; the image does not establish a natural mineral identity