Agate
Banded Chalcedony (SiO2)
mineral
Category
Man Made Object (Metalwork)
Browse man made object (metalwork) specimens identified by the Rock Identifier community.
Asphalt (Road Aggregate)
Bituminous Conglomerate / Asphalt Concrete
Anthropogenic (Man-made)
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
sedimentary
Aqua Aura Quartz
Silicon Dioxide (SiO2) bonded with Gold (Au)
mineral (treated)
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid
Opalite
Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)
mineral
Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
mineral
Opalite (Man-made Glass)
Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)
Synthetic Mineral Simulant / Glass
Opalite (Man-made Glass)
Synthetic Opalised Glass
mineral
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
mineral
Blue Goldstone
Goldstone (artificial glass)
Mineral (man-made glass, not natural)
Slag Glass
Anthropogenic Amorphous Silicon Dioxide
mineral
Rainbow Hematite (Titanium Coated)
Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating
mineral
Fluorite (Polished Point/Tower)
Calcium Fluoride (CaF2)
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)
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
sedimentary (anthropogenic / man-made)
Goldstone
N/A (Synthetic Glass with Copper Inclusions)
Manufactured Glass
Blue Goldstone
Aventurine Glass
Man-made glass (often grouped with minerals in lapidary)
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
mineraloid (synthetic)
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
mineral
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
mineraloid / man-made glass
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)
Iron Slag
Iron/Steel Slag (Ferrosilicate Glass)
industrial byproduct (anthropogenic material)
Iron Slag (Industrial Byproduct)
Anthropogenic Vitrification Product/Ferrous Slag
Mineral-like Industrial Smelting Waste
Opalite
Man-made glass (traditionally simulated Opal)
mineral
Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Synthetic/Man-made glass (often mistaken for a mineral)
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Pink Tumbled Quartz (Dyed)
Silicon Dioxide (SiO2)
mineral
Chert Concretion (with typical hematite/limonite staining)
Sedimentary Concretion (SiO2 with FeO(OH)⋅nH2O)
sedimentary
Sandstone Concretion
Clastic Sedimentary Rock (primarily SiO2 with mineral cement)
sedimentary
Opalite
Synthetic Opalised Glass
mineraloid (synthetic)
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral (synthetic)
Chipped Glass/Plastic Fragment
Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic
Man-made material (simulant/artifact)
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
mineraloid (man-made)
Green Glass (often marketed as 'Obsidian' or 'Green Quartz')
Amorphous Silica (SiO2) with copper or chromium additives
Mineraloid (Man-made)
Goldstone (Red)
Aventurine Glass (SiO2 + Cu)
Synthetic Glass (Often categorized as a simulated mineral)