Diamond (in a jewelry setting)
Carbon (C)
Category
Browse mineral (man made glass, not natural) specimens identified by the Rock Identifier community.
Diamond (in a jewelry setting)
Carbon (C)
Slag (Industrial Glass/Glassy Rock)
Anthropogenic Vitreous Material
Blue Slag Glass
Ferro-silicate glass (Slag)
Quartz (Engineered Quartz Surface)
Silicon Dioxide (SiO2) based composite
Blue glassy mineral fragment, possibly sodalite or dyed/cobalt glass
Uncertain; likely sodalite (Na₈Al₆Si₆O₂₄Cl₂) if natural, but vivid blue color may indicate cobalt-colored glass
Sandstone-based Concrete Fragment
Cementitious Composite with Sedimentary Aggregate
Asphalt (Bituminous pavement)
Bituminous concrete / Asphalt
Polished stone sphere, possibly agate or jasper
Likely microcrystalline quartz (SiO₂); exact variety cannot be confirmed from the image
Likely blue glass or synthetic gemstone jewelry
Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass
Goldstone
Aventurine Glass (SiO2 + Cu small inclusions)
Faceted glass-like gemstone object
Likely synthetic glass or cubic zirconia; exact material cannot be confirmed from the image
Sandstone (likely Quartzose Sandstone)
Arenite
Sandstone Concretion
Clastic Sedimentary Rock (primarily SiO2 with mineral cement)
Sandstone
Arenite (SiO2 primarily)
Mixed polished gemstone and mineral collection
Primarily quartz varieties (SiO₂), plus probable aventurine, rose quartz, amethyst, agate, jasper, serpentine, feldspar, and possibly dyed or man-made glass pieces
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Pearl
Biogenic CaCO3 (Aragonite and Calcite)
Decorative gemstone-chip jewelry (likely turquoise, coral, and assorted beads)
Predominantly turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; other pieces appear to be dyed coral or red stone, and possibly shell/metal components
Corundum (Ruby variety)
Aluminium oxide (Al2O3)
Cullet Glass (Industrial Slag Glass)
Amorphous Silica (SiO2) with metallic oxide impurities
Sandstone
Arenite (variable SiO2 composition)
Blue Chalcedony Cube
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2) with trace aluminum and irradiation
Faceted colorless gemstone, likely quartz or glass imitation
Most likely quartz (SiO₂), though the strong glare and visible facet pattern could indicate cubic zirconia or lead glass
Decorative gemstone bracelet or jewelry
Unidentifiable from the blurred image; likely colored glass or synthetic stones, possibly mixed gemstone beads
Dyed Agate / Painted Stone
Silicon Dioxide (SiO2) with artificial pigment
Sandstone Concretion
Clastic sedimentary rock (primarily Quartz SiO2)
Banded Chert / Chalcedony
Silicon Dioxide (SiO2)
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
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.
Goldstone (likely blue-free synthetic goldstone pendant)
Synthetic aventurine glass; silica glass with dispersed metallic copper crystals
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
Tumbled black stone, likely black obsidian
Obsidian; volcanic glass, typically rhyolitic composition (SiO₂-rich)
Diamond (or Diamond Simulant)
Carbon (C) or Cubic Zirconia (ZrO2)
Diamond in Kimberlite
Diamond (C in Kimberlite)
Diamond (as set in a gold ring)
Carbon (C)
Jasper Marble
Silicon Dioxide (SiO2) with Impurities
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Corundum (Sapphire/Ruby in Matrix)
Corundum (Al2O3)
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown