Aquamarine with Ruby Accent
Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)
mineral
Category
Carved Stone
Browse carved stone specimens identified by the Rock Identifier community.
Learn about Carved Stone in the encyclopedia
View all →
Hag Stone
Perforated Sedimentary Rock / Flint / Limestone
sedimentary
Weathered sandstone or iron-stained sedimentary stone
Quartz-rich sandstone, commonly arkose or lithic sandstone; composition cannot be confirmed visually
sedimentary
Gabbro Pebble (Polished Beach/River Stone)
Gabbro
igneous
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Granodiorite
Granodiorite (containing Plagioclase, Quartz, and Biotite)
igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Pumice
Pumice (Vesicular Felsic Igneous Rock)
igneous
Granite River Rock
Phaneritic Felsic Igneous Rock (Granite)
igneous
Dalmatian Stone (Dalmatian Jasper)
Dalmatian Stone (A variety of Perthite / Aplite)
Igneous
Porphyry (Porphyritic Basalt / Porphyritic Andesite)
Porphyritic Igneous Rock
igneous
Polished pink quartzite or jasper
Quartzite, predominantly SiO₂; possibly iron-stained jasper/chalcedony
metamorphic
Granite
Felsic Plutonic Rock
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Slag (Industrial Byproduct)
Anthropogenic Vitreous Silicate material
igneous
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Quartzite
Metamorphic Quartz Arenite
metamorphic
Banded Quartzite
Quartzite (Metamorphosed Quartz Arenite)
metamorphic
Basalt
Extrusive Igneous Rock
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Granite
Phaneritic plutonic rock (Felsic)
igneous
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Red Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Porphyritic Rhyolite
Porphyritic Rhyolite (Extrusive Igneous Rock)
igneous
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Chert (Arrowhead Preform or Point)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Sandstone (Banded)
Sedimentary Clastic Rock
sedimentary
Granodiorite or Diorite
Granodiorite / Diorite
igneous
Septarian Nodule (Dragon Stone)
Septarian Concretion (CaCO3 + CaMg(CO3)2 + SiO2)
sedimentary
Amazonite
Potassium Feldspar (KAlSi3O8)
mineral
Granite
Granite (Felsic Intrusive Igneous Rock)
igneous
Chert (Yellow/Tan Variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Gneiss
Gneiss
metamorphic
Red gemstone ring, likely garnet or synthetic ruby
Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish
gemstone
Petoskey Stone
Hexagonaria percarinata
fossil
Polished/tumbled septarian nodule (likely)
Calcite–aragonite–barite septarian concretion; composition varies, commonly calcite (CaCO₃) with clay/mudstone and iron oxides
sedimentary
Tumbled yellow jasper or serpentine
Jasper: microcrystalline quartz (SiO₂); possible serpentine: Mg₃Si₂O₅(OH)₄
mineral