Asphalt (Bituminous Concrete)
Composite material (bitumen binder with mineral aggregate)
man-made rock (technosol)
Category
Man Made Material (Jewelry, Metal Alloy)
Browse man made material (jewelry, metal alloy) specimens identified by the Rock Identifier community.
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Gold
Aurum (Elemental Gold, Au)
Mineral, Metal (element)
Coquina
Bioclastic Limestone (Coquina)
sedimentary
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Synthetic Marbled Aggregate (Footwear Component)
Ethylene-vinyl acetate (Croslite™)
not a rock (man-made polymer)
Chert (often called Flint)
Chert (SiO2)
sedimentary
Banded Chert (River Stone)
Silicon Dioxide (SiO2)
sedimentary
Chert / Flint
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (and/or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Coquina
Biogenic Limestone (Calcium Carbonate - CaCO3)
sedimentary
Coquina
Biogenic Limestone (mostly Calcium Carbonate, CaCO3)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Chert (Lightly weathered variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Blue Topaz (facetted in jewelry)
Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)
mineral
Chert (and/or Flint)
Chert (Cryptocrystalline variety of Quartz, SiO2)
sedimentary
Amethyst (in jewelry)
Silicon Dioxide (SiO2) with iron impurities
mineral
Slag (Industrial Byproduct)
Ferrous/Non-ferrous Silicate
igneous (artificial/anthropogenic)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Porcelain (Kaolin-based)
Alumina silicate ceramic (composed primarily of Kaolinite: Al2Si2O5(OH)4)
metamorphic (man-made/engineered)
Coquina
Bioclastic Limestone
sedimentary
Coquina
Biogenic Limestone (Calcite, CaCO3)
sedimentary
Sandstone
Arenite (SiO2, often with CaCO3 or Fe2O3 cement)
sedimentary
Jasper
Silicon Dioxide (SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
mineral
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Man-made metamorphic-style composite
Diamond (in jewelry setting)
Adamantine Carbon (C)
mineral
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement (primarily SiO2 with Fe2O3/FeOOH)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Chert (often called Flint for darker varieties)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Conglomerate with Native Copper
Clastic Sedimentary Rock with Native Copper (Cu)
sedimentary
Faceted Glass (Costume Jewelry)
Amorphous Silicon Dioxide with colorants (Glass)
Synthetic/Man-made Material
Quartzite
Quartzite (mostly SiO2)
metamorphic
Petrified Wood (Silicified Wood)
Silicified Paleoflora (mainly Quartz, SiO2)
metamorphic
Natural or Cultured Pearl
Calcium Carbonate (Aragonite and Conchiolin), CaCO3
Mineral (Organic)
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Granite (weathered pebble)
Granite (plutonic igneous rock)
Igneous
Chert (and Flint)
Silicon Dioxide (SiO2)
sedimentary
Coquina
Coquina (Biogenic Limestone / CaCO3)
sedimentary