Blue goldstone
Man-made aventurine glass containing metallic copper particles; not a natural mineral
Category
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
Blue goldstone
Man-made aventurine glass containing metallic copper particles; not a natural mineral
Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Moldavite
Tektite (Impact Glass), ~80% SiO2 + Al2O3
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
Slag
Anthropogenic glassy silicate
Green glass-like mineral specimen, likely fluorite
Fluorite (calcium fluoride, CaF₂), if natural; appearance may also indicate colored glass
Aventurine Quartz
Silicon Dioxide (SiO2) with Fuchsite inclusions
Blue Impression Jasper beads
Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions
Blue Obsidian
Volcanic Glass (Silica, SiO2)
White sea glass (naturally frosted glass fragment)
Man-made silicate glass, typically soda-lime glass; not a mineral or rock
Tumbled opalite (likely man-made glass)
Opalite, a trade name for opalescent glass; not natural opal
Sea Glass
Man-made silicate glass (Amorphous silicon dioxide)
Opalite-style pendant (likely synthetic glass, not natural opal)
Opalescent glass; commonly sold as “opalite” (not a recognized mineral species)
Ferro-slag (Leland Blue/Slag Glass)
Anthropogenic Vitreous Silica (Industrial Slag)
Acrylic or Resin (Synthetic Imitation)
Polymethyl Methacrylate (PMMA) or Polyepoxide
Polished labradorite pendant
Labradorite, a calcium-rich plagioclase feldspar (approximately NaAlSi₃O₈–CaAl₂Si₂O₈)
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Milky quartz (rough quartz fragment)
Quartz, silicon dioxide (SiO₂)
Tumbled clear quartz (rock crystal)
Quartz, silicon dioxide (SiO₂)
Red-orange cabochon, likely carnelian or glass imitation
Carnelian: chalcedony (microcrystalline SiO₂), commonly iron-colored
Opalite (Man-made Glass)
Synthetic Opalised Glass
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
Man-made Crystal (Lead Glass)
Lead oxide-doped Silica Glass (approx. SiO2 + PbO)
Opalite
Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
Goldstone
Aventurine glass
Cherry Quartz
SiO2 (Silicon Dioxide with iron-rich inclusions/dye)
Cullet Glass (Man-made Glass Slag)
Amorphous Silica (SiO2) with chemical additives
Colorless faceted gemstone, likely glass or cubic zirconia
Probably cubic zirconia (zirconium dioxide, ZrO₂); diamond cannot be confirmed visually
Libyan Desert Glass
Libyan Desert Glass (SiO2 with trace elements)
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
Fluorite (Polished Point/Tower)
Calcium Fluoride (CaF2)
Man-made Glass (Tumbled/Shaped)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Bismuth
Bismuth (Bi)
Clear quartz crystal (likely)
Quartz, silicon dioxide (SiO₂)
Zinc Alloy (Silver-plated)
Zinc Alloy Casting (Zn-Al-Mg-Cu)
Sandstone Concretion
Septarian or Carbonate-cemented Sandstone Concretion
Chert Concretion
Chert (Microcrystalline Quartz, SiO2)
Blue Obsidian
Volcanic Glass (SiO2 with inclusions)
Opalite
Synthetic Opalised Glass
Opalite
Synthetic Silicon Dioxide (SiO2)
Slag Glass
Anthropogenic Amorphous Silicon Dioxide