Dalmation Stone (Dalmation Jasper)
Peralkaline Rock with Feldspar and Arfvedsonite
igneous
Category
Synthetic (Not A Natural Rock)
Browse synthetic (not a natural rock) specimens identified by the Rock Identifier community.
Learn about Synthetic (Not A Natural Rock) in the encyclopedia
View all →
Dyed Agate Slice
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Chert Conglomerate (or Breccia)
Sedimentary Clastic Rock (variety: Ferruginous Chert Breccia)
sedimentary
Quartz crystal pendant
Quartz (silicon dioxide, SiO₂), likely rock crystal or milky quartz
mineral
Granite Pebble
Granite (Plutonic Igneous Rock)
igneous
Sandstone
Clastic Sedimentary Rock
sedimentary
Slate
Slate (Metamorphic rock)
metamorphic
Asphalt (Bituminous Concrete)
Bituminous Concrete / Pavement
man-made (synthetic rock)
Pink Dyed Agate
Chalcedony (SiO2) with artificial dyes
mineral
Hag Stone
Perforated Calcarenite or Chert
sedimentary
Concrete Fragment
Hardened Portland Cement Composite
Anthropogenic (Man-made material mimicking sedimentary rock)
Fossilized Bored Limestone
Limestone with Ichnofossils (Gastrochaenolites or Entobia)
sedimentary
Small rounded pebble
Unidentified lithic clast; likely fine-grained sandstone, mudstone, or basalt
sedimentary
Fossilized Echinoid / Sea Urchin Internal Mold
Echinoidea internal cast (steinkern)
fossil
Quartzite
Quartzite (SiO2)
metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with inclusions)
metamorphic
Sandstone (Pebble)
Sandstone (SiO2 dominated with minor feldspar/clay)
sedimentary
Sandstone (specifically Arkose or Quartz Arenite)
Arenite (primarily SiO2 with possible Feldspar)
sedimentary
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Sandstone
Sandstone (clastic sedimentary rock, predominantly SiO2)
sedimentary
Sandstone
Clastic Sedimentary Rock (composed mostly of quartz, SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Hag Stone (Banded Chert or Limestone with Borehole)
Microcrystalline Quartz (Chert) or Calciferous Siltstone (CaCO3/SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone
Arenite
sedimentary
Sandstone
Sandstone (lithified quartz arenite, arkose, graywacke, etc. depending on composition)
Sedimentary Rock
Amethyst Lace Agate / Banded Amethyst
Silicon Dioxide (SiO2) with Fe3+ impurities
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Siltstone with Fossil Cast
Sedimentary Rock (Siltstone / Fine-grained Sandstone)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities and natural irradiation
mineral
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Granite
Intrusive Felsic Igneous Rock
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Phaneritic intrusive igneous rock
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Granite (Felsic Plutonic Rock)
Igneous
Fossiliferous Limestone
Fossiliferous Carbonate Rock (CaCO3)
sedimentary
Granite
Granite (Phaneritic Quartz-Feldspar rock)
igneous
Pink Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Citrine
SiO2 (Silicon Dioxide)
Mineral
Pink Granite
Granite (enriched in Potassium Feldspar / Orthoclase)
igneous
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary