Flint / Chert
Microcrystalline Quartz (SiO2)
Category
Browse carved stone specimens identified by the Rock Identifier community.
Flint / Chert
Microcrystalline Quartz (SiO2)
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
Larimar (Pectolite)
NaCa2Si3O8(OH)
Citrine Quartz
Silicon Dioxide (SiO2)
Jasper
Silicon dioxide (SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)
Rough Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
Porphyritic Basalt
Porphyritic Basalt (with Plagioclase phenocrysts)
Rose Quartz
Silicon Dioxide (SiO2)
Orange Quartz (Citrine Quartz)
Silicon Dioxide (SiO2) with iron impurities
Porphyritic Basalt (Chinese Writing Stone)
Porphyritic Basalt or Porphyritic Andesite
Granodiorite
Granodiorite
Mookaite Jasper
Silicified Radiolarite (SiO2)
Tumbled feldspar-rich stone, likely granite or granitic pegmatite
Quartz–feldspar aggregate; likely alkali feldspar and plagioclase with minor quartz, possibly altered
Fossil Coral
Hexagonaria / Rugose coral (Fossilized calcium carbonate)
Fossilized Coral
Hexagonaria (Rugose coral) / Calcium Carbonate (CaCO3)
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
Yellow Jasper (Chert)
Silicon Dioxide (SiO2)
Larimar
Blue Pectolite (NaCa2Si3O8(OH))
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
Quartz (Citrine variety)
Silicon Dioxide (SiO2)
Lapis Lazuli
Complex metamorphic rock primarily composed of Lazurite ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2), Calcite, and Pyrite
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Citrine
Silicon Dioxide (SiO2)
Chert (with Quartz Vein)
Microcrystalline Quartz (SiO2)
Yellow Quartzite
Quartzite (SiO2)
Oolitic Limestone
Oolitic Limestone (CaCO3)
Banded Gneiss
Gneiss
Basalt
Mafic extrusive igneous rock
Mixed tumbled gemstone collection
Varied minerals, likely including amethyst, sodalite/lapis lazuli, quartzite or aventurine, jasper, and agate/chalcedony
Limestone
Calcium Carbonate (CaCO3)
Calligraphy Stone
Fossiliferous Stromatolite Limestone (also known as Arabic Script Stone, Miriam Stone, or Elephant Skin Jasper)
Sandstone with Iron-Stained Band
Quartz Arenite / Sedimentary Rock
Chert (River Stone)
Microcrystalline Quartz (SiO2)
Limestone
Sedimentary rock composed of Calcium Carbonate (CaCO3)
Wishing Stone (Quartz-Veined Pebble)
Hydrothermal Quartz in Metasedimentary Matrix (SiO2/Matrix)
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, SiO2)
Gneiss (Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Mica)
Quartzite
Meta-quartzite