Granite / Pegmatite Pebble
Felsic intrusive igneous rock
igneous
Category
Not A Natural Rock
Browse not a natural rock specimens identified by the Rock Identifier community.
Learn about Not A Natural Rock in the encyclopedia
View all →
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz Cluster
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Stream-Rounded Shale or Mudstone
Argillaceous sedimentary rock
sedimentary
Clear Quartz Sphere
Crystalline Silicon Dioxide (SiO2)
mineral
River Pebble (Siltstone / Basalt)
Microcrystalline Quartz / Indurated Mudstone / Fine-grained Basalt
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Purple Dyed Dalmatian Stone
Dyed Peralkaline Trachyte
igneous
Golden Healer Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite inclusions
mineral
Sandstone
Arenite
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with inclusions
metamorphic
Quartz Geode
Silicon Dioxide (SiO2) in sedimentary host rock
sedimentary
Sandstone (Quartzose type)
Arenite (primarily SiO2)
sedimentary
Fossilized Bored Limestone
Limestone with Ichnofossils (Gastrochaenolites or Entobia)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Small rounded pebble
Unidentified lithic clast; likely fine-grained sandstone, mudstone, or basalt
sedimentary
Banded Sandstone (Liesegang Rings)
Arenite with Liesegang rings (SiO2/Fe2O3)
sedimentary
Banded Sandstone
Arenite with Liesegang banding
sedimentary
Diamond
Diamond (Pure Carbon, C)
mineral
Rough Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Likely weathered river pebble
Indeterminate lithology; possibly fine-grained sandstone, siltstone, or chert
sedimentary
Red Agate Sphere
Chalcedony (SiO2 with iron oxide inclusions)
sedimentary
Dzi Bead Necklace (Agate/Carnelian)
Chalcedony (cryptocrystalline Quartz), SiO2
gemstone
Conglomerate
Clastic sedimentary rock (Puddingstone)
sedimentary
Sandstone
Arenite
sedimentary
Blue Quartzite (Dyed)
Metamorphosed Quartz-rich Sandstone (SiO2 with organic dye)
metamorphic
Sandstone (Quartzose)
Arenite (composed mainly of SiO2)
sedimentary
Hag Stone
Perforated Chert (Microcrystalline Silica, SiO2)
sedimentary
Vesicular Basalt
Basalt
igneous
Granite
Granite (Phaneritic Igneous Rock)
igneous
River Pebble (Gneiss or Quartzite mixture)
Metamorphic rock (Commonly Gneissic)
metamorphic
Shale (Ferruginous)
Laminated Mudrock (Siliciclastic Sedimentary Rock)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Hag Stone
Perforated sedimentary rock (typically limestone, sandstone, or flint)
sedimentary
Diamond (Cut Specimen)
Diamond (pure carbon, C)
mineral
Granite Gravel (Pebble)
Intrusive Felsic Igneous Rock
igneous
Granite
Felsic Plutonic Igneous Rock
igneous
Granite
Intrusive igneous felsic rock
igneous