Sea Glass
Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Sea Glass
Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature
Blue Goldstone
Man-made glass with suspended copper, cobalt, or manganese particles
Clear quartz tumbled stone
Quartz (silicon dioxide, SiO₂)
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Quartz pebble
Silicon dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Blue-dyed tumbled quartz or glass imitation
Quartz (SiO₂), appearance possibly enhanced with blue dye; identity uncertain from image
Cubic Zirconia (Simulated Diamond)
Cubic Zirconia (ZrO2)
Opalite
Synthetic Opalized Glass
Blue Glass or Slag Glass
Amorphous Silica (Anthropogenic Glass)
Black glassy fragment, likely obsidian or industrial glass
Volcanic glass (obsidian), chiefly amorphous SiO₂; identification uncertain from image
Asphalt Conglomerate
Artificial Bituminous Conglomerate
Conglomerate (Puddingstone)
Conglomerate (Clastic Sedimentary Rock)
Conglomerate (or Breccia)
Clastic Sedimentary Rock (Conglomeratic)
Puddingstone (Conglomerate)
Conglomerate (clastic sedimentary rock)
Gowganda Tillite (Puddingstone)
Gowganda Formation Conglomerate
Quartzite Conglomerate
Conglomerate (SiO2 rich)
Blue obsidian-like volcanic glass
Volcanic glass, chiefly silica-rich amorphous material (composition uncertain)
Milky quartz (likely quartz crystal fragment)
Quartz, silicon dioxide (SiO₂)
Puddingstone (Polished Pebble)
Conglomerate (Quartz-rich)
Quartz pebble
Silicon dioxide (SiO2)
Pet Rock (Man-made Quartzite or Granite Cobble)
Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica
Hematite Beads
Hematite (Fe2O3)
Puddingstone
Conglomerate (Gowganda Formation)
Polished black stone, likely black obsidian
Obsidian (volcanic glass), chiefly silica-rich rhyolitic composition
Pink Tumbled Quartz (Dyed)
Silicon Dioxide (SiO2)
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
Quartzite (Engineered Stone)
Silicon Dioxide (SiO2) based synthetic composite
Slag Glass
SiO2 (Silicon Dioxide) with impurities
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Blue Goldstone
Goldstone (artificial glass)
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Black Obsidian
Amorphous volcanic glass (SiO2 + impurities)
Puddingstone (Gowganda)
Gowganda Formation Conglomerate
Green sea glass or tumbled green quartz (uncertain)
Likely quartz (SiO₂) if natural; alternatively man-made soda-lime glass
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
Conglomerate (or Breccia)
Clastic Sedimentary Rock
Quartz pebble
Silicon dioxide (SiO2)