Zoisite with Ruby

Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)

metamorphic

Banded Iron Formation (BIF) / Tiger Iron

Banded Iron Formation containing Hematite (Fe2O3) and Magnetite (Fe3O4)

sedimentary

Dendritic Limestone

Calcite with Manganese Oxide (Manganese Dendrites)

sedimentary

Ammonite Fossil

Ammonoidea (subclass)

sedimentary

Coquina with Shell Fragment

Bioclastic Limestone (composed primarily of CaCO3)

sedimentary

Chert (and Fossilized Brachiopod shell)

Sedimentary Cryptocrystalline Quartz (SiO2)

sedimentary

Gastropod Internal Mold (Steinkern)

Class Gastropoda fossil mold (Phylum Mollusca)

sedimentary

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4

mineral

Basalt Pebble

Vesicular Basalt

igneous

Amber

Succinite (C10H16O)

mineraloid

Amber

Succinite (C10H16O)

mineraloid

Fossil Shark Tooth

Carcharodon sp. (likely Otodus or similar Lamniformes order)

sedimentary

Fossilized Shark Tooth

Scapanorhynchus (Sand Tiger Shark relative)

sedimentary

Clear Quartz Crystal (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

mineral

Satin Spar (Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

mineral

Carnelian Agate

Chalcedony (SiO2) with iron oxide inclusions

mineral

Carnelian Agate

Carnelian (Silicon Dioxide - SiO2)

mineral

Calligraphy Stone

Mariam Jasper (Fossiliferous Limestone composed of Hematite and Shell remains)

sedimentary

Soapstone (Steatite) carving

Steatite (primarily Talc, Mg3Si4O10(OH)2)

metamorphic

Serpentine

Serpentine-group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

metamorphic

Red Jasper

Jasper (Silicon Dioxide, SiO2)

sedimentary

Dalmatian Stone

Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)

igneous

Goldstone

Aventurine glass (Synthetic glass with copper inclusions)

mineraloid / man-made glass

Ironstone Concretion / Limonite Node

Goethite and Limonite (FeO(OH) nH2O)

sedimentary

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

sedimentary

Chert (often called Jasper or River Siltstone)

Microcrystalline Quartz (SiO2)

sedimentary

Liesegang Ring Siltstone

Siltstone with iron oxide Liesegang bands

sedimentary

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

metamorphic

Bituminous Coal

Bituminous coal (Organic Sedimentary Rock)

sedimentary

Ocean Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

sedimentary

Sandstone (with Liesegang rings or Oxidation)

Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)

sedimentary

Red Quartzite (River Stone)

Quartzite (primarily SiO2)

metamorphic

Basalt with Jasper Veining

Basaltic Rock with Cryptocrystalline Quartz (SiO2)

igneous

River Jasper (Green Jasper)

Silicon Dioxide (SiO2) with impurities

sedimentary

Red Jasper (Brecciated or Mottled)

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary

Rock Salt / Halite Crust

Halite (Sodium Chloride, NaCl)

sedimentary

Jasper

Silicon dioxide (SiO2) with impurities

sedimentary

Bauxite

Alumina-rich rock (consisting of Gibbsite, Boehmite, and Diaspore)

sedimentary

Slag

Anthropogenic Vitrophyre (Iron or Smelting Slag)

Mineral-like byproduct

Gneiss (Metamorphic Rock)

Gneiss

metamorphic

Jasper (Green Jasper/Chert)

Silicon Dioxide (SiO2)

sedimentary

Chert with Quartz/Calcite Vein

Microcrystalline Silica (SiO2)

sedimentary