Sandstone (lithic wacke/arenite)
Clastic sedimentary rock (SiO2 + varied clasts)
sedimentary
Category
Carved Stone
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Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Unakite
Altered Granite (Epidotized Granite)
metamorphic
Tumbled iron-rich stone, likely hematite-bearing rock
Hematite (Fe₂O₃), possibly mixed with magnetite/goethite and host rock
mineral
Moqui Marble (Shaman Stone)
Ironstone Concretion (Fe2O3 with a sandstone core)
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Phaneritic plutonic rock (mainly Quartz, Feldspar, and Mica)
igneous
Carnelian
SiO2 (Silicon Dioxide) with Ferric Oxide inclusions
mineral
Red Jasper
Silicon Dioxide with Iron inclusions (SiO2)
sedimentary
Greenstone (Greenschist)
Greenschist facies rock (containing chlorite, epidote, actinolite)
metamorphic
Pink Granite
Phaneritic Quartz-Feldspar Granite
igneous
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
igneous
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Unakite
Unakite (Epidotized Granite)
metamorphic
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2 + Fe2O3
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2)
sedimentary
Tumbled serpentine (likely green calcite or aventurine alternative)
Serpentine-group minerals, commonly antigorite/lizardite; approximate formula Mg₃Si₂O₅(OH)₄
metamorphic
Gray Agate with Druzy Quartz Geode
Cryptocrystalline Quartz (SiO2)
mineral
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Satin Spar (often sold as Selenite)
Gypsum (CaSO4·2H2O)
mineral
White Quartz (Carved or Tumbled)
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Plutonic Felsic Rock
igneous
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Rhyolitic Tuff
Rhyolitic Tuff / Pyroclastic rock
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Red Jasper
Silicate (SiO2 with Hematite impurities)
sedimentary
Granite
Granite (Mainly Quartz SiO2, Feldspar KAlSi3O8, and Mica KAl2(AlSi3O10)(OH)2)
Igneous
Prehnite
Ca2Al(AlSi3O10)(OH)2
mineral
Blue Aventurine
Quartz (SiO2) with inclusions
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (likely Calcareous or Micaceous)
Clastic sedimentary rock (primarily Quartz with Cementing Agents)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, e.g., Lizardite, Chrysotile, Antigorite)
metamorphic
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Sandstone
Sandstone (Silicon Dioxide, SiO2)
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Phaneritic intrusive igneous rock (approx. 70 percent SiO2)
igneous
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Petoskey Stone
Hexagonaria percarinata
fossil
Carnelian Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Dzi Bead (Agate Bead)
Cryptocrystalline Quartz (SiO2) - Chalcedony/Agate
mineral
Dalmatian Jasper
Dalmatian Stone (Felsite with Arfvedsonite/Tourmaline)
igneous