Agate
Silicon Dioxide (Chalcedony variety, $SiO_2$)
Category
Browse carved stone specimens identified by the Rock Identifier community.
Agate
Silicon Dioxide (Chalcedony variety, $SiO_2$)
Sandstone
Clastic Sedimentary Rock
Amazonite
Amazonite (K[AlSi3O8])
Granite
Phaneritic Igneous Rock (Granitic)
Pink Granite
Phaneritic Felsic Igneous Rock
Granite
Phaneritic plutonic rock (primarily Quartz, Alkali Feldspar, and Plagioclase)
Red Sandstone Pebble
Sedimentary Quartz Arenite / Arkose
Diorite (River Pebble)
Intermediate plutonic igneous rock
Granite
Phaneritic Felsic Igneous Rock
Granite
Phaneritic Plutonic Felsic Rock
Sandstone
Arenite (composed primarily of SiO2)
Diorite
Diorite (an intrusive igneous rock)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Pink Granite (with Potassic Feldspar and Quartz)
Felsic Intrusive Igneous Rock (Granite)
Granite
Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Sandstone
Arenite (SiO2 primarily)
Banded Agate (specifically Gobi Eyes or Eye Agate)
Silicon Dioxide (SiO2) - Variety of Chalcedony
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, e.g., Lizardite, Chrysotile, Antigorite)
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Sandstone
Clastic sedimentary rock (primarily quartz arenite)
Red Jasper
Chalcedony (SiO2) with iron inclusions
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Sandstone
Sedimentary Rock (Quartz arenite)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Red Jasper
Microcrystalline Quartz (Chalcedony), SiO2
Petoskey Stone (Fossilized Coral)
Hexagonaria percarinata
Dragon Stone
Argillaceous Sedimentary Rock (Ohko Stone)
Amethyst Quartz (Chevron Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Pink Granite
Granite (composed primarily of Orthoclase Felspar, Quartz, and Plagioclase)
Basalt (with Brass Inlay)
Basalt (Mafic volcanic rock)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Tumbled gray stone, likely serpentinite or weathered basalt
Tentatively serpentinite (predominantly serpentine-group minerals); identification is uncertain from the photograph
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg, Fe)3Si2O5(OH)4)
Milky Quartz
Silicon Dioxide (SiO2)
Sandstone (Red/Brown Sandstone pebble)
Arenite (SiO2 dominated sandstone)
Sodalite
Na8(Al6Si6O24)Cl2
Yellow Jade (Yellow Chalcedony/Quartz)
Silicon Dioxide (SiO2)
Dalmatian Stone
Peralkaline Quartz-Feldspar Rock