Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
sedimentary
Category
Man Made Material, Not A Natural Rock Or Mineral Specimen
Browse man made material, not a natural rock or mineral specimen specimens identified by the Rock Identifier community.
Learn about Man Made Material, Not A Natural Rock Or Mineral Specimen in the encyclopedia
View all →
Sandstone (Calcareous Sandstone)
Calcareous Sandstone (primarily SiO2 with CaCO3 cement)
sedimentary
Diamond
Native Carbon (C)
gemstone
Sea Glass
Man-made silicate glass
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone Concretion
Clastic Sedimentary Concretion (SiO2 with Iron Oxide)
sedimentary
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
mineral
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
mineral
Sandstone (Quartzose Sandstone)
Arenite (SiO2 based)
sedimentary
Sandstone (specifically Arkose or Quartz Arenite)
Arenite (primarily SiO2 with possible Feldspar)
sedimentary
Concretion
Sedimentary Concretion (Ironstone / Calcite Concretion)
sedimentary
Opalite
Synthetic glass (SiO2 + metal additions)
mineraloid
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Asphalt (Bituminous Concrete)
Composite material (bitumen binder with mineral aggregate)
man-made rock (technosol)
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Probable amber fragment
Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)
gemstone
Sandstone
Sandstone (clastic sedimentary rock)
sedimentary
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration
mineral
Moissanite
Silicon Carbide (SiC)
mineral
Sandstone
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Chalk
Calcite (CaCO3)
sedimentary
Libyan Desert Glass
Libyan Desert Glass (SiO2 with trace elements)
mineral (impactite)
Diorite (River Pebble)
Intermediate Phaneritic Igneous Rock
igneous
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
gemstone
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
sedimentary
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Ruby in Matrix
Corundum (Al2O3)
mineral
Obsidian
Volcanic Glass (Amorphous Silicon Dioxide)
igneous
Synthetic Faux Fur Fursuit
Polyacrylonitrile / Polyester (Synthetic Textile)
not a rock (synthetic material/costume)
Sandstone (likely Arkosic)
Arenite (SiO2 with KAlSi3O8)
sedimentary
Quartz pebble in concrete
Quartz (SiO₂), embedded in Portland-cement concrete
mineral
Chert (specifically Tan/Gray Chert)
Microcrystalline quartz (SiO2)
sedimentary
Opalite
Man-made Glass (Synthetic Opalized Glass)
gemstone
Goldstone (Synthetic Aventurescence Glass)
Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)
mineraloid / man-made material
Slag
Anthropogenic glassy silicate
Mineral-like byproduct
Sandstone (likely Ferruginous)
Sandstone (SiO2 with iron oxides)
sedimentary
Diamond (in a jewelry setting)
Carbon (C)
mineral
Dalmatian Stone
Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)
igneous
Diamond
Carbon (C)
gemstone
Diamond
Diamond (pure Carbon, C)
mineral
Synthetic Marbled Aggregate (Footwear Component)
Ethylene-vinyl acetate (Croslite™)
not a rock (man-made polymer)
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
man-made material