Greenstone / Greenschist
Chlorite schist / Epidiorite
metamorphic
Category
Carved Stone
Browse carved stone specimens identified by the Rock Identifier community.
Learn about Carved Stone in the encyclopedia
View all →
Polished/tumbled multicolored stone, possibly jasper
Likely opaque microcrystalline quartz (chalcedony/jasper); exact identification is uncertain because the image is out of focus
mineral
Carnelian
Silicon dioxide (SiO2)
mineral
Sandstone (River Stone)
Arenite (primarily SiO2)
sedimentary
Fossil Coral
Hexagonaria (Rugose coral) / Rugosa
fossil
Granodiorite
Granodiorite
Igneous
Crackle Quartz (Dyed)
SiO2 (Silicon Dioxide) - Treated
mineral
Petoskey Stone
Favosites alpenensis
fossil
River Cobble (Quartzite/Granite mix)
Quartzite-rich river stone
metamorphic
K2 Jasper
Azurite in Granite (K2 Stone)
metamorphic
Limestone with Fossil Imprints
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Wishing Stone
Greenschist or Basalt with Quartz/Calcite Vein
metamorphic
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary (fossilized)
River Cobbles (Quartzite and Sandstone)
Metamorphosed Quartz-rich Sedimentary Rock
metamorphic
Petoskey Stone
Hexagonaria percarinata
fossil
Chert (River Pebble/Finger Stone)
Microcrystalline quartz (SiO2)
sedimentary
Petoskey Stone
Hexagonaria percarinata
sedimentary
Quartzite (River Stone)
Quartzite (predominantly SiO2)
metamorphic
Basalt River Stone
Aphanitic Basalt
igneous
Basalt River Stone
Aphanitic Mafic Igneous Rock
igneous
Quartz Pebble (Hag Stone / Adder Stone)
Silicon Dioxide (SiO2)
mineral
Faceted Citrine
Citrine Quartz (Silicon Dioxide, SiO2)
gemstone
Basalt Pebble (Beach Stone)
Aphanitic Mafic Igneous Rock
igneous
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Dalmatian Jasper
Dalmatian Stone (Aplite with Arfvedsonite)
igneous
Green Quartzite Pebble
Quartzite (SiO2 with chlorite/fuchsite inclusions)
metamorphic
Citrine (Heat-treated or Natural Quartz)
Silicon Dioxide (SiO2)
mineral
Larimar
Blue Pectolite (NaCa2Si3O8(OH))
mineral
Unakite
Epidotized Granite
metamorphic
Quartzite River Stone
Quartzite (SiO2)
metamorphic
Black tumbled stone, likely basalt or black jasper
Most consistent with fine-grained basalt (mainly plagioclase and pyroxene); exact identification requires testing
igneous
Tumbled cream-colored stone, likely quartzite or limestone
Probably quartzite (microcrystalline SiO₂); limestone alternative: calcite (CaCO₃)
metamorphic
Sandstone Anvil / Nutting Stone
Quartzose Sandstone (Sedimentary Rock)
sedimentary
Fossiliferous Limestone / Petoskey Stone (Coral Fossil)
Hexagonaria percarinata / Calcite (CaCO3)
fossil
Asphalt
Asphalt concrete
sedimentary
Tumbled Mixed Gemstones and Rocks
Various mineral species including quartz (SiO2) and silicate minerals
mineral
Basalt
Basalt
igneous
Wishing Stone / Banded Quartz Vein Pebble
Sedimentary pebble with hydrothermal quartz veins (SiO2)
sedimentary