Milky quartz
Quartz (silicon dioxide, SiO₂)
Category
Browse man made mineral simulant (glass) specimens identified by the Rock Identifier community.
Milky quartz
Quartz (silicon dioxide, SiO₂)
Colorless faceted gemstone, likely cubic zirconia
Synthetic cubic zirconia (zirconium dioxide, ZrO₂); identity is visual and not definitive
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, e.g., Antigorite, Lizardite, or Chrysotile)
Diamond (or Diamond Simulant)
Native Carbon (C)
Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)
Quartz, silicon dioxide (SiO₂)
Faceted clear gemstone ring, likely quartz or glass imitation
Unidentified colorless faceted material; quartz (SiO₂) is possible, but the image cannot distinguish it from glass or another gem
Blue Slag Glass
Amorphous Silica (Byproduct of smelting)
Man-made Carved Stone (Scream Mask/Skull motif)
Carved Soapstone or Serpentine-rich rock
Clear faceted gemstone, likely synthetic cubic zirconia
Cubic zirconia (zirconium dioxide, ZrO₂); visual identification is not definitive and diamond or synthetic moissanite are alternatives
Blue Goldstone
Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)
Milky quartz pebble
Quartz (silicon dioxide, SiO₂)
Terracotta (Man-made ceramic brick fragment)
Baked clay / High-iron ceramic (Silicate-based ceramic)
Ruby-set gold ring
Ruby (corundum), Al₂O₃ colored red by chromium; mounted in a gold alloy
Blue chalcedony cabochon (probable)
Chalcedony, a cryptocrystalline variety of quartz; silicon dioxide, SiO₂
Note: Item is a Synthetic/Man-made Object
Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)
Silicon Carbide (Carborundum)
Moissanite (SiC), though mostly synthetic
Jade (likely Nephrite Jade based on appearance)
Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)
Faceted clear gemstone, likely glass imitation or cubic zirconia
Uncertain; possibilities include cubic zirconia (zirconium dioxide, ZrO₂), quartz (SiO₂), or lead glass
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
White drusy quartz
Quartz, silicon dioxide (SiO₂), with a drusy coating of tiny crystals
Milky quartz (rough fragment)
Quartz, silicon dioxide (SiO₂)
Faceted blue gemstone ring, likely synthetic spinel or glass; identity uncertain
Possibly synthetic blue spinel (MgAl₂O₄) or laboratory sapphire (Al₂O₃); the clear side stones may be cubic zirconia or glass
Diamond (or Cubic Zirconia simulant)
Carbon (C) / Zirconium dioxide (ZrO2)
Orange tumbled feldspar, likely sunstone
Probably potassium feldspar (orthoclase or microcline); identification is uncertain from the image
Diamond jewelry
Diamond (crystalline carbon, C)
Diamond (or Cubic Zirconia simulant)
Carbon (C) or Zirconium Dioxide (ZrO2)
Serpentine (Serpentinite)
Serpentinite (complex silicate group including lizardite, chrysotile, and antigorite)
Beaded gemstone bracelet
Indeterminate; likely small polished mineral beads, possibly turquoise or dyed stone, with metal and glass components
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
Diamond (or Cubic Zirconia simulant)
Carbon (C) / Zirconium Dioxide (ZrO2 if synthetic)
Diamond ring
Diamond, crystalline carbon (C), likely a faceted mounted stone
Colorless faceted gemstone, likely glass or quartz
Uncertain; appearance is consistent with faceted quartz (SiO₂), but cut glass or cubic zirconia cannot be excluded from the photograph
Tumbled green glassy mineral, possibly aventurine or fluorite
Uncertain; likely quartz variety (aventurine quartz, SiO₂) or green fluorite (CaF₂)
Likely beach-worn glass and a pebble
The brown piece appears to be weathered glass (amorphous SiO₂-rich material); the pale piece is likely a small quartz-rich stone, possibly milky quartz.
Goldstone and pink quartz bead strands
Goldstone is aventurescent copper-bearing glass; pink beads are likely rose quartz (SiO₂), though dyed or glass imitations are possible
Blue Howlite (Dyed)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
Colorless faceted gemstone (likely cubic zirconia)
Cubic zirconia, ZrO₂ (synthetic zirconium dioxide); possibly synthetic glass or lab-grown diamond
Blue Goldstone
Synthetic glass with copper or cobalt/manganese inclusions
Clear crystal-bead bracelet, possibly quartz
Unidentified transparent mineral beads; quartz (SiO₂) is one possibility
Milky quartz pebble
Quartz, silicon dioxide (SiO₂)
Cubic Zirconia
Cubic Zirconia (Zirconium Dioxide, ZrO2)
Green Aventurine
Silicon Dioxide (SiO2+KAl2(AlSi3O10)(OH)2)