Slag (Industrial Glass/Glassy Rock)
Anthropogenic Vitreous Material
igneous
Category
Man Made Rock (Technosol)
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Concrete
Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)
sedimentary (artificial)
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Man-made)
mineraloid
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Mineraloid / Industrial Byproduct
Opalite
Synthetic Glass (Amorphized Silicon Dioxide)
mineraloid
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Metal Alloy (Likely Pewter or Sterling Silver)
Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).
Man-made material (metal)
Blue Obsidian
Volcanic Glass (SiO2 with inclusions)
igneous
Green glass sphere/marble
Soda-lime glass (primarily SiO2, Na2O, CaO)
Man-made object (Simulant)
Aura Quartz (specifically Titanium Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)
mineral
Blue Goldstone
Auraventurine (Synthetic glass with cobalt and copper inclusions)
Synthetic (Man-made Glass)
Opalite
Synthetic Glass (Simulated Opal)
gemstone
Opalite
Synthetic Glass (Simulated Opal)
gemstone
Synthetic Resin / Plastic Figurine
Synthetic Polymer (Copolymer of Polyethylene or Resin)
Mineraloid-like Synthetic Material
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Byproduct)
mineraloid
Aura Quartz
Titanium or Gold bonded Silicon Dioxide (SiO2)
mineral
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
gemstone
Chert (Chalky Flint Node)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Opalite
Synthetic Opalized Glass
gemstone
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Quartz (Engineered Stone Countertop)
Silicon Dioxide (SiO2) with polymer resins
Sedimentary-like (Industrial Composite)
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Carborundum (Silicon Carbide)
Silicon Carbide (SiC) / Moissanite (natural form)
mineral
Asphalt Chunk
Asphalt concrete
man-made composite
Smelter Slag
Anthropogenic Silicate Slag
igneous
Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)
Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)
Synthetic (Ceramic)
Sea Glass (specifically Frosted White)
Amorphous Silica (substance: Sodium-calcium silicate glass)
Mineraloid (Anthropogenic/Man-made rock)
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Cubic Zirconia (Jewelry Setting)
Zirconium Dioxide (ZrO2)
gemstone
Diamond
Native Carbon (C)
mineral
Blue Slag Glass
Anthropogenic Amorphous Silicon Dioxide
mineral
Opalite Egg
Synthetic Glass (Simulated Opal)
mineral
Rainbow Hematite Ring
Iron(III) oxide (Fe2O3) with thin-film coating
mineral
Concrete with Aggregate
Artificial Conglomerate (Cement and Aggregate)
sedimentary
Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂), opaque-to-translucent milky variety
mineral
Blue Goldstone
Goldstone (artificial glass)
Mineral (man-made glass, not natural)
Blue Goldstone
Synthetic glass with cobalt and copper inclusions
man-made glass
Cubic Zirconia (Jewelry Setting)
Cubic Zirconia (ZrO2)
gemstone
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
mineraloid / anthropogenic
Concrete fragment or Conglomerate
Artificial Conglomerate (Concrete) or Natural Conglomerate
sedimentary