Bloodstone
Heliotrope
Category
Browse carved stone specimens identified by the Rock Identifier community.
Bloodstone
Heliotrope
Diorite (Salt and Pepper Rock)
Diorite
Petrified Wood
Silicified Wood (primarily SiO2)
Howlite
Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)
Granite
Granite (Felsic Plutonic Rock)
Sandstone
Arenite (SiO2 based)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (Mica)
Granite
Intrusive Felsic Igneous Rock (composed of Quartz, Potassium Feldspar, Plagioclase Feldspar, and Biotite/Amphibole)
Travertine / Tufa
Calcium Carbonate (CaCO3)
Unakite
Unakite (Epidotized Granite)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Sandstone
Arenite
Pink Granite
Granite (Phaneritic igneous rock)
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite mica)
Granite
Granitoid (SiO2 typically > 69%)
Picasso Jasper (Picasso Stone)
Metamorphosed Calcium Carbonate (Silicified Limestone)
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
Unakite
Unakite (Altered Granite)
Botryoidal Chalcedony with Iron Staining
Microcrystalline Quartz (SiO2)
Carnelian Agate
Chalcedony (Silicon Dioxide, SiO2)
Green Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions
Diorite
Diorite (Intermediate intrusive igneous rock)
Serpentine
Serpentinite; chiefly antigorite, lizardite, or chrysotile Mg₃Si₂O₅(OH)₄
Rose Quartz
Silicon Dioxide (SiO2)
Polished banded calcite (onyx marble)
Calcite, CaCO₃; commonly sold as banded calcite or “onyx marble”
Blue Lace Agate
Silicon Dioxide (SiO2)
Tumbled blue-gray stone, likely labradorite or sodalite
Possibly labradorite (plagioclase feldspar, approximately NaAlSi₃O₈–CaAl₂Si₂O₈) or sodalite (Na₈(Al₆Si₆O₂₄)Cl₂)
Milky quartz
Quartz (silicon dioxide, SiO₂)
Milky quartz
Quartz, silicon dioxide (SiO₂)
Carnelian
Silicon Dioxide (Quartz variety), SiO2
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Fe/Mn/Mg)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Unakite
Unakite (Epidotized Granite)
Red Jasper
Silicon Dioxide (SiO2) - Chalcedony
Chalcedony (Common Opal or Agate variant)
Silicon dioxide (SiO2) with trace hydration
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Red Jasper
Silicon Dioxide (SiO2) - Opaque microcrystalline quartz
Sandstone (likely Quartz Sandstone)
Arenite (SiO2 based)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Granite
Phaneritic Plutonic Rock (Granite)