Igneous Or Sedimentary

Amazonite

K(AlSi3O8)

Moss Agate with Jasper

Chalcedony (SiO2 with inclusions)

White Sapphire

Corundum (Al2O3)

Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)

Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Smoky Quartz (Faceted Beads)

Silicon Dioxide (SiO2)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

Quartz Pebble (Water-worn)

Silicon Dioxide (SiO2)

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Moqui Marble (Shaman Stone)

Iron Oxide Concretion (Goethite/Hematite shell with Sandstone core)

Sandstone (Ferruginous)

Arenite (Fe-rich)

Chert (Beach Pebble)

Microcrystalline Quartz (SiO2)

Fossilized Fish Skeleton in Matrix

Vertebrata (Class: Actinopterygii), typically found in limestone or shale matrices

Garnet Beads

Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)

Glauconitic Sandstone

Glauconitic sandstone ((K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)

Granite

Granodiorite / Granite (Phaneritic Igneous Rock)

Sandstone (Ferruginous)

Arenite (with Goethite/Limonite cement)

Greenstone / River Jadeite pebble

Metavolcanic rock / Chlorite or Actinolite-rich schist

Granite

Granite (a felsic intrusive igneous rock)

Sandstone (Quartzite-rich Cobble)

Clastic sedimentary rock (primarily SiO2)

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Fossiliferous Limestone with Rugose Coral

Calcite (CaCO3) matrix containing Rugosa (order of extinct solitary and colonial corals)

Quartz with Mafic Inclusions

Silicon Dioxide (SiO2) with host igneous matrix

Vesicular Basalt

Basalt (a mafic extrusive igneous rock)

Pink Granite

Phaneritic intrusive igneous rock (Granite)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Vesicular Basalt

Extrusive mafic igneous rock (Basalt)

Granite

Intrusive Phaneritic Felsic Igneous Rock

Basalt River Stone

Basalt (Aphanitic Mafic Igneous Rock)

Granite Water-Worn Pebble

Felsic intrusive igneous rock (Granite)

Granite Pebble

Granite (Felsic intrusive igneous rock)

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Granite

Granite (Felsic Intrusive Igneous Rock)

Basalt (Vesicular or Weathered)

Aphanitic Mafic Igneous Rock (Basalt)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Basalt (with possible fluidal texture)

Basalt (Aphanitic Mafic Igneous Rock)

Granite

Phaneritic Intrusive Igneous Rock (Granite)

Pink Granite

Phaneritic Intrusive Igneous Rock (Granite)

Diorite

Diorite (Intermediate intrusive igneous rock)

Granite Pebble

Granite (Phaneritic intrusive igneous rock)