Goldstone (Brown)
Aventurine glass
Category
Browse man made glass specimens identified by the Rock Identifier community.
Goldstone (Brown)
Aventurine glass
Hematite Beads
Hematite (Fe2O3)
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Note: Item is a Synthetic/Man-made Object
Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)
Man-made Synthetic Material (Not a rock or mineral)
Polyester (Polyethylene terephthalate) / Faux Fur
Man-made Synthetic Material (Costume Faux Fur)
Synthetic Polymer (Polyester/Acrylic)
Terracotta (Man-made ceramic brick fragment)
Baked clay / High-iron ceramic (Silicate-based ceramic)
Blue slag glass / industrial smelter slag
Man-made iron-rich silicate slag; composition variable, commonly Fe–Ca–Mg–Al silicates with glassy phases
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
Goldstone (aventurine glass)
Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone
Blue glass-like bead or gemstone keychain ornament
Indeterminate; likely cobalt-blue glass or synthetic blue spinel, not identifiable as a natural mineral from the image
Sea Glass
Amorphous Silicon Dioxide (SiO2)
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
Brick
Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)
Likely blue glass or synthetic gemstone jewelry
Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Slag (Anthropogenic Glass/Iron byproduct)
Ferro-silicate Slag
Blue Slag Glass
Amorphous Silica (Byproduct of smelting)
Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)
Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy
Porcelain (Stoneware Ceramic)
Mullite / Silica-glass composite (Al6Si2O13)
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
Rough Diamond
Native Carbon (C)
Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)
Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)
Black Obsidian
Obsidian (Volcanic Glass, SiO2 + impurities)
Sea Glass
Amorphous silicon dioxide (glass)
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)
Quartz, silicon dioxide (SiO₂)
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration
Corundum (Pink Sapphire / Ruby)
Al2O3 (Aluminum Oxide)
Obsidian
Volcanic Glass (70% or more SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Chert (specifically Tan/Gray Chert)
Microcrystalline quartz (SiO2)
Fired Clay Brick (Anthropic Rock substitute)
Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)
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
Sea Glass (Cobalt Blue)
Amorphous Silica (Glass with Cobalt additives)
Nickel coin (U.S. currency)
Cupronickel (75% Copper, 25% Nickel alloy)
Sea Glass
Amorphous Silica (Glass) SiO2
Blue Sea Glass
Amorphous Silica (Anthropogenic glass)
Red glass-like crystal, likely synthetic ruby or red glass
Uncertain from image; possible corundum (ruby), Al₂O₃, or synthetic glass