Chert Concretion
Chert (Microcrystalline Quartz, SiO2)
Category
Browse mineraloid (man made) specimens identified by the Rock Identifier community.
Chert Concretion
Chert (Microcrystalline Quartz, SiO2)
Asphalt (Road Aggregate)
Bituminous Conglomerate / Asphalt Concrete
Bismuth
Bismuth (Bi)
Slag
Metallurgical Slag
Pink Quartz / Sea Glass
Silicon Dioxide (SiO2)
Obsidian (Blue)
Volcanic Glass (SiO2)
Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye
Clear quartz sphere
Quartz (silicon dioxide, SiO₂)
Opalite (Man-made Glass)
Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Hematite
Iron(III) oxide (Fe2O3)
Green Sea Glass
Man-made vitreous material (silica glass)
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
Opalite
Synthetic Opalised Glass
Opalite
Synthetic Silicon Dioxide (SiO2)
Slag Glass
Anthropogenic Amorphous Silicon Dioxide
Rainbow Hematite (Titanium Coated)
Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating
Mystic Topaz
Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating
Sandstone (with concrete/human-made layer)
Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)
Opalite (Man-made Glass)
Synthetic Opalised Glass
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
Cherry Quartz with Rose Quartz
Crystalline Quartz (SiO2) with glass-based synthetic components
Blue Goldstone
Aventurine Glass
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
Precious Coral (Red Coral)
Corallium rubrum (Calcium Carbonate, CaCO3)
Polished brown jasper (likely brecciated or orbicular jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Opalite
Synthetic Opalized Glass / Man-made Glass
Sea Glass
Man-made silicate glass weathering product
Opalite
Synthetic Glass / Man-made Opal Simulant
Goldstone
Avventurina (Man-made Glass with Copper inclusions)
Opalite
Man-made glass (traditionally simulated Opal)
Diamond / Clear Quartz / Glass paste
Carbon (Diamond) / Silicon Dioxide (Quartz)
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Brick fragment (Man-made material)
N/A (Fired clay)