Granite
Intrusive Igneous Rock (Granitic)
Category
Browse man made (synthetic rock) specimens identified by the Rock Identifier community.
Granite
Intrusive Igneous Rock (Granitic)
Sandstone
Arenite (SiO2 composition dominant)
Slag (Industrial Glass/Metal)
Ferrous slag or Glassy silicate byproduct
Parti Sapphire
Corundum (Al2O3)
Sandstone
Sedimentary Rock (Quartz Sandstone)
Sandstone
Arenite (SiO2 based)
Limpets Shell / Fossil Specimen
Patellogastropoda (Class)
Chert (Flint)
Silicon Dioxide (SiO2)
Quartzite
Metamorphic Quartz Rock (SiO2)
Granite
Felsic intrusive igneous rock
Cubic Zirconia
Cubic Zirconium Dioxide (ZrO2)
Cubic Zirconia
Zirconium dioxide (ZrO2)
Red Sandstone
Quartz Arenite (iron-stained) / SiO2
Banded Gneiss
Gneiss (Foliated Metamorphic Rock)
Granite
Phaneritic Felsic Igneous Rock
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
Lapis Lazuli (in Matrix)
Na8[Al6Si6O24]S2 (Lazurite as the primary component)
Pink Granite
Phaneritic Felsic Igneous Rock (composed of orthoclase, quartz, and plagioclase)
Asphalt aggregate (crushed stone in bitumen)
Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen
Ruby / Red Corundum
Al2O3 (Aluminum Oxide with Chromium trace)
Granite
Granite (Felsic Plutonic Rock)
Lapis Lazuli
Lazurite-dominant rock, (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2
Natural Pearl
Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3
Sandstone
Arenite (SiO2 primarily)
Sandstone (Pebble)
Sandstone (SiO2 with matrix/cement)
Mica Schist
Mica Schist (principally Biotite/Muscovite, Quartz, and Feldspar)
Amber (Simulated/Faturan Style)
Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)
Porphyry
Porphyritic Igneous Rock
Chert (and Agate/Chalcedony)
Microcrystalline Quartz (SiO2)
Chert Nodule
Microcrystalline Quartz (SiO2)
Granite
Granite (Plutonic Igneous Rock)
Ruby / Red Tourmaline
Corundum (Al2O3) or Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)
Diabase (Dolerite)
Diabase
Granite
Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
Quartzite
Metamorphic quartz rock (SiO2)
Quartzite
Metamorphic Quartz Rock (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Sandstone
Arenite (primarily SiO2)
Aura Quartz (Anomalously Coated Quartz)
Silicon Dioxide (SiO2) treated with vaporized metals
Note: Item is not a geological specimen
Polyester mesh and Ethylene-vinyl acetate (EVA) polymer
Sandstone
Sedimentary Rock (Quartz Sandstone)
Basalt
Basalt