Opalite
Synthetic Opalised Glass
Mineral (Synthetic / Man-made)
Category
Man Made Byproduct (Non Geological)
Browse man made byproduct (non geological) specimens identified by the Rock Identifier community.
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Opalite
Synthetic Glass (Simulated Opal)
gemstone
Black Obsidian
Amorphous volcanic glass (SiO2 + impurities)
igneous
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Man-made rock-like material
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Red Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Antropogenic (Man-made material)
Sea Glass
Amorphous silicon dioxide (man-made glass weathered by nature)
mineral
Ring with an Orange Inlay
N/A (Man-made object)
Man-made Object (Ring)
Quartz pebble (Quartztite fragment)
Silicon Dioxide (SiO2)
mineral
Engineerged Quartz (Quartz Composite)
SiO2 (Silicon Dioxide) in a polymer resin matrix
mineral
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
mineral
Blue Goldstone
Aventurine Glass
man-made glass
Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
mineral
Bouncy Ball (Synthetic Rubber Polymer)
Polybutadiene / Ethylene Vinyl Acetate (EVA)
Synthetic material (Not a rock or mineral)
Exposed Aggregate Concrete (Pea Gravel)
Concrete with Siliceous Alluvial Gravels
sedimentary (man-made conglomerate)
Unidentifiable Rock Fragment
Uncertain
Opalite
Synthetic Opalised Glass
mineral
Opalite
Synthetic glass / Opalized glass
gemstone
Ferrous Slag (Iron Smelting By-product)
Fused Siliceous Slag
Anthropogenic Material (Man-made Rock)
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Anticrystalline / Synthetic Alloy
Opalite
Man-made Glass (Synthetic Opalized Glass)
mineral
Cullet Glass (Strawberry Glass)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Mineraloid (Synthetic/Man-made)
Likely weathered iron-rich rock or slag fragment
Uncertain; possibly limonite/goethite-rich material (FeO(OH)·nH₂O)
mineral
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
gemstone
Hematite
Iron(III) oxide (Fe2O3)
mineral
Moldavite
Tektite (Impact Glass), ~80% SiO2 + Al2O3
tektite
Glass / Silicon Dioxide (Man-made)
SiO2 (Amorphous Silicon Dioxide)
Amorphous Solid
Aggregate Concrete
Anthropogenic Conglomerate (Technosol)
sedimentary
Opaline Glass (Opalite)
Synthetic Silicon Dioxide Glass
Mineraloid (Man-made)
Crushed Stone (Likely Limestone or Granite)
Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite
sedimentary or igneous
Titanium-coated Metal Cube (Man-made Fidget Toy)
Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)
Mineral alternative / Synthetic
Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Mineraloid (Man-made Glass)
Green Sea Glass
Man-made vitreous material (silica glass)
gemstone
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
mineral
Aqua Aura Quartz
Titanium/Gold-coated Silicon Dioxide (SiO2)
mineral
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Concrete Rubble with Aggregate
Hardened Portland Cement Paste with Coarse Aggregate
Anthropogenic (Man-made)
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
sedimentary
Concrete Paver (Artificial Cementitious Rock)
Hydrated Portland Cement Aggregate
Sedimentary (Synthetic)
Concretion (Sandstone)
Carbonate-cemented Sandstone Concretion
sedimentary
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
anthropogenic sedimentary (technolith)
Sea Glass (White/Clear)
Amorphous Silica (Alkali-Lime-Silica Glass), SiO2 + Na2O + CaO
Anthropogenic (Man-made product subject to geological processes)