Diamond Plate (Steel)
Alloyed Carbon Steel or Aluminum with 'Durbar' pattern
not a rock (Man-made industrial metal)
Category
Sedimentary (Man Made Conglomerate)
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
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Sea Glass (Frosted Glass)
Amorphous Silica (SiO2) with various additives
Man-made material (Anthropogenic 'mineraloid')
Iron Slag
Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)
Anthropogenic (Man-made industrial byproduct)
Green Aura Quartz (Titanium treated Kyanite or Quartz)
Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating
mineral (man-made aura treatment)
Slag
Ferrous Slag (Siliceous industrial waste)
Anthropogenic (Man-made industrial byproduct)
Sea Glass (Uranium/Vaseline Glass variant)
Silicon Dioxide (SiO2) with trace Uranium Oxide (U3O8)
man-made silicate (anthropogenic glass)
Garnet-bearing granite or pegmatitic granitic rock
Coarse-grained granitoid, likely granite or pegmatite, composed mainly of quartz and feldspar with almandine/spessartine garnet and dark biotite or amphibole
igneous
Goldstone (blue-goldstone–style glass) beads
Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral
mineral
Strawberry Quartz (or Pink Aventurine)
Quartz with Hematite/Goethite inclusions (SiO2)
mineral
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Diorite (River Pebble)
Intermediate plutonic igneous rock
igneous
Chert (or possibly Flint)
Chert (variant: Flint)
Sedimentary
Dyed Blue Agate Slice
Silicon Dioxide (SiO2)
mineral
Pearls (likely freshwater cultured pearls)
Pearl: nacre, primarily aragonite (CaCO₃) with conchiolin
gemstone
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Tumbled Gabbro
Gabbro (Mafic intrusive igneous rock)
igneous
Diamond in Kimberlite
Diamond (C in Kimberlite Matrix)
igneous
Desert Rose (also known as Sand Rose)
Gypsum (CaSO4·2H2O) or Barite (BaSO4) with sand inclusions
mineral
Dragon Vein Agate (Dyed/Treated)
Agate (SiO2)
mineral
Eroded Brick or Pumice-like Scoria
Vesicular Basalt / Scoria (Anthropogenic variant: Eroded Firebrick)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Amethyst
Amethyst (Silicon Dioxide, SiO2 + Fe4+ impurities)
mineral
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
mineral (synthetic/man-made coating)
Ferrous Slag (Iron Smelting By-product)
Fused Siliceous Slag
Anthropogenic Material (Man-made Rock)
Ferrochrome Slag
Industrial Glassy Slag (Fe-Cr alloy byproduct)
Antropogenic (Man-made industrial byproduct)
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Man-made rock-like material
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
not a natural rock (man-made composite)
Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Anthropogenic specimen (Man-made material)
Blue Goldstone
Aventurine Glass
Man-made mineral simulant (Glass)
Slag Glass (Cullet)
Amorphous Silica / Glass residue
Man-made byproduct (Non-geological)
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Antropogenic (Man-made industrial byproduct)
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Man-made metamorphic-style composite
Synthetic Costume Glove (Paws)
Polyethylene terephthalate (Polyester) & Polyurethane blend
Non-geological / Man-made textile
Slag
Anthropogenic Vitrification Product / Silicate Slag
Anthropogenic (Man-made industrial byproduct)
Rose Gold (Copper-Gold Alloy)
Aurum-Cuprum Alloy (Au-Cu)
mineral (native element alloy)
Fossilized Ray Barb (Stinger) Fragment
Myliobatiformes indet. (Fossil stingray spine)
fossil
Amethyst (with Pyrite and other minerals)
Silicon Dioxide (SiO2)
mineral
Diamond
Carbon (C)
gemstone
Diorite
Intermediate plutonic igneous rock
igneous
Diamond
Natural Diamond (Carbon, C)
gemstone
Dyed Quartz (imitating Emerald/Green Quartz)
Silicon Dioxide (SiO2) with artificial pigment
mineral
Diorite (River Pebble)
Intermediate Phaneritic Igneous Rock
igneous