Granite
Granite (composed primarily of Quartz SiO2, Potassium Feldspar KAlSi3O8, and Plagioclase)
Category
Browse carved stone specimens identified by the Rock Identifier community.
Granite
Granite (composed primarily of Quartz SiO2, Potassium Feldspar KAlSi3O8, and Plagioclase)
Granite
Granitoid (composition typically SiO2, Al2O3, K2O, Na2O)
Pink Granite
Phaneritic intrusive igneous rock (Felsic)
Yellow Aventurine
Silicon Dioxide (SiO2) with inclusions
Unakite
Altered Granite (Epidotized Granite)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Serpentine
Serpentine Group (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Red Jasper
Silicon Dioxide (SiO2)
Porphyritic Granite (Pink Granite)
Granite (plagioclase, alkali feldspar, quartz, biotite)
Granodiorite (River Pebble)
Granodiorite
Gray Agate with Druzy Quartz Geode
Cryptocrystalline Quartz (SiO2)
Serpentine
Serpentinite (Mg, Fe)3Si2O5(OH)4
Serpentine (Green Jasper variety)
Antigorite/Chrysotile, Mg3Si2O5(OH)4
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Tiger's Eye
Fibrous Quartz (SiO2) with iron inclusions
Granite (Fine-grained)
Phaneritic Felsic Igneous Rock
Granite
Granite (Mainly SiO2 and Al2O3)
Granite
Phaneritic plutonic rock (SiO2 > 69%)
Black Onyx
Silicon Dioxide (SiO2)
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
Rhodonite
Rhodonite ((Mn2+,Fe2+,Mg,Ca)SiO3)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Snowflake Obsidian
Volcanic Glass with Spherulite Inclusions (70–75% SiO2)
Red Jasper
Silicon dioxide (SiO2) with iron oxide (Hematite) inclusions
Red Tiger's Eye
Silicified Crocidolite (Quartz pseudo-morph after Crocidolite), SiO2
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Chert (Jasper)
Microcrystalline Quartz (SiO2) with Iron Oxide inclusions
Agate
SiO2 (Silicon Dioxide - Chalcedony)
Red Jasper
Microcrystalline Quartz (SiO2) with Hematite impurities
Green Aventurine
Quartzite (Silicon Dioxide, SiO2 + Fuchsite)
Rose Quartz
SiO2 (Silicon Dioxide)
Granite
Granite (Felsic Intrusive)
Red Jasper
SiO2 (Microcrystalline Quartz)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Granite
Phaneritic plutonic rock (dominated by SiO2, Al2O3, K2O, Na2O)
Libyan Desert Glass
Impactite (High-silica tektite)
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
Brecciated Jasper
SiO2 (Silicon Dioxide)
Carnelian (Orange Agate/Chalcedony)
Silicon Dioxide (SiO2) - variety of Chalcedony
Banded Black Onyx (Chalcedony)
Silicon Dioxide (SiO₂)