Slag
Metallurgical Slag
igneous
Category
Mineraloid (Man Made Origin)
Browse mineraloid (man made origin) specimens identified by the Rock Identifier community.
Learn about Mineraloid (Man Made Origin) in the encyclopedia
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Pink Quartz / Sea Glass
Silicon Dioxide (SiO2)
mineral
Obsidian (Blue)
Volcanic Glass (SiO2)
igneous
Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye
mineral
Synthetic Convention Badge (Plastic/PVC)
Polyvinyl Chloride (PVC) / Polycarbonate
mineraloid (synthetic)
Clear quartz sphere
Quartz (silicon dioxide, SiO₂)
mineral
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
mineraloid (man-made)
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
mineraloid (man-made)
Goldstone (Brown)
Aventurine glass
mineraloid (man-made)
Opalite
Synthetic Opalised Glass
mineral
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
gemstone
Opalite
Synthetic Silicon Dioxide (SiO2)
mineral
Rainbow Hematite (Titanium Coated)
Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating
mineral
Sandstone (with concrete/human-made layer)
Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)
sedimentary
Mystic Topaz
Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating
mineral
Diamond (in jewelry setting)
Carbon (C)
mineral
Opalite
Synthetic Opalized Glass / Man-made Glass
gemstone
Sea Glass
Man-made silicate glass weathering product
sedimentary
Opalite
Synthetic Glass / Man-made Opal Simulant
gemstone
Goldstone
Avventurina (Man-made Glass with Copper inclusions)
mineral
Opalite
Man-made glass (traditionally simulated Opal)
mineral
Opalite (Man-made Glass)
Synthetic Opalised Glass
mineral
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
mineral
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
sedimentary (anthropogenic / man-made)
Cherry Quartz with Rose Quartz
Crystalline Quartz (SiO2) with glass-based synthetic components
gemstone
Blue Goldstone
Aventurine Glass
Man-made glass (often grouped with minerals in lapidary)
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
anthropogenic (human-made) sedimentary-like material
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
industrial byproduct
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Synthetic Glass (Man-made)
Polished brown jasper (likely brecciated or orbicular jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
gemstone
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
gemstone
Diamond / Clear Quartz / Glass paste
Carbon (Diamond) / Silicon Dioxide (Quartz)
gemstone
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
mineral
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Antropogenic (Man-made industrial byproduct)
Brick fragment (Man-made material)
N/A (Fired clay)
man-made
Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Synthetic/Man-made glass (often mistaken for a mineral)
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)