Asphalt (Road Aggregate)
Bituminous conglomerate
sedimentary
Category
Mineral (Man Modified)
Browse mineral (man modified) specimens identified by the Rock Identifier community.
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Diamond (in a gold ring)
Diamond (pure carbon, C)
mineral
Diamond (or Simulant)
Carbon (C)
gemstone
Opalite
Synthetic glass (SiO2 + impurities)
mineral
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
sedimentary
Not a rock, mineral, or geological specimen
N/A
Asphalt Concrete
Bituminous Concrete
sedimentary (artificial)
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Green Obsidian Sphere (man-made glass)
Vitreous Silica with Chromium/Iron additives
mineralogical simulant
Blue crystal pendant (likely blue glass or synthetic crystal)
Not identifiable from the image; possibly synthetic quartz or glass, rather than a natural mineral
gemstone
Yellow Sapphire (Raw)
Corundum (Al2O3)
mineral
Felsic Drill Core (likely Gneiss or Granite)
Felsic Metamorphic Rock (Gneissic profile)
metamorphic
Metal Chain Belt with Square Plates
Not applicable (man-made)
Man-made Object (Metalwork)
Fossilized Stingray Mouth Plate
Myliobatidae gen. et sp. indet. (e.g., Myliobatis, Aetobatus)
fossil
Diamond (in a jewelry setting)
Diamond (Carbon, C)
mineral
Tumbled black stone, likely black obsidian
Obsidian (volcanic glass; chiefly silica-rich rhyolitic composition)
igneous
Sandstone Concretion
Limonitic Sandstone Concretion
sedimentary
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
anthropogenic sedimentary (technolith)
Synthetic Resin Charm (Seal Shape)
Polymer Resin with plastic glitter / Polyethylene terephthalate glitters
Synthetic material (Not a rock or mineral)
Opalite
Synthetic glass / Opaque silicious glass
gemstone
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
gemstone
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Asphalt Concrete (Bituminous Pavement)
Aggregates in Bitumen Matrix
Technogenic / Anthropogenic Pavement Material
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Polished blue glassy mineral specimen, likely sodalite or blue aventurine
Most consistent with sodalite (Na₈Al₆Si₆O₂₄Cl₂), though dyed quartzite or blue glass cannot be excluded from the photograph
mineral
Cubic Zirconia (Jewelry Setting)
Zirconium Dioxide (ZrO2)
gemstone
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
mineral
Blue glassy gemstone-like specimen
Indeterminate; possibly dyed or treated turquoise, blue apatite, or man-made glass
gemstone
Diamond (or Diamond Simulant)
Carbon (C)
mineral
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂), opaque-to-translucent milky variety
mineral
Aura Quartz / Rainbow Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Concrete
Anthropogenic Conglomerate
sedimentary
Goldstone
Aventurine Glass (Man-made)
mineral
Blue opalite glass cabochon (likely imitation opal)
Man-made opalescent glass; not a natural mineral
gemstone
Corundum (Pink Sapphire / Ruby)
Al2O3 (Aluminum Oxide)
mineral
Sea Glass
Man-made vitreous material
mineral
Diamond (in jewelry setting)
Diamond (C - Carbon)
mineral
Red glassy gemstone, possibly garnet
Unidentified red transparent material; garnet group (X₃Y₂(SiO₄)₃) is a possibility
gemstone
Sea Glass
Silicon dioxide (mostly)
mineral
Crackled Quartz (Dyed)
Silicon Dioxide (SiO2)
mineral
Quartz pebble (Quartztite fragment)
Silicon Dioxide (SiO2)
mineral