Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Small gray rock fragment, likely granite or diorite

Uncertain; probable coarse-grained silicate rock dominated by feldspar and quartz, possibly biotite/hornblende

Chalcedony (Agate/Carnelian)

Cryptocrystalline Quartz (SiO2)

Mixed tumbled stone collection

Assorted minerals, likely including quartz, jasper, agate, and possibly obsidian or hematite

Granite Pebble with Quartz/Mafic Vein

Felsic Igneous Rock (Granitic)

Quartz (Milky Quartz vein fragment)

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz Veined Basalt Pebble

Amygdaloidal Basalt with Quartz (SiO2) veining

Dark river pebble (likely basalt or andesite)

Fine-grained mafic/intermediate volcanic rock; commonly basalt (plagioclase ± pyroxene/olivine)

Milky Quartz

Silicon Dioxide (SiO2)

Tumbled quartz-rich stone, likely milky quartz

Quartz (SiO₂), possibly iron-stained milky quartz or quartzite

Weathered quartz-rich granitoid (likely granite or granodiorite)

Granite–granodiorite; chiefly quartz (SiO₂), feldspar, and minor mica/amphibole

Jasper, possibly Brecciated Jasper or Ocean Jasper due to patterns and color

Silicon Dioxide (SiO2), a variety of Chalcedony

Quartz-veined Sedimentary Rock

Hydrothermally veined Clastic Sedimentary Rock (SiO2 veins in Matrix)

Wishing Stone (Quartz-veined Siltstone or Graywacke)

Hydrothermal Quartz vein in matrix of SiO2 (Quartz) and Al2O3 (Clay minerals)

Pink Granite

Granite (Felsic Plutonic Rock)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Coquina or Fossiliferous Conglomerate

Bioclastic Rudstone (variable composition)

Quartz-rich pegmatite (likely feldspar–quartz rock)

Granitic pegmatite; predominantly quartz (SiO₂) and feldspar, with possible mica and iron-oxide staining

Milky Quartz

Silicon Dioxide (SiO2)

Rough Quartz (Milky / Clear Quartz)

Silicon Dioxide (SiO2)

Rough Quartz (Clear Quartz)

Silicon Dioxide (SiO2)

Pebble

Clast (specifically a granule or small pebble)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Quartz Crystal on Matrix

Silicon Dioxide (SiO2)

Sandstone (with Quartz veining)

Arenite (primarily SiO2)

Milky Quartz Vein Rock

Silicon Dioxide (SiO2)

Picasso Jasper (Picasso Stone)

Metamorphosed Calcium Carbonate (Silicified Limestone)

Quartz Vein in Host Rock (Gossanous Matrtix)

Silicon Dioxide (SiO2) with iron oxides (Limonite/Hematite)

Unidentified weathered rock fragment

Likely granitic or feldspathic rock; exact identification requires clearer imaging and testing

Quartz pebble

Silicon dioxide (SiO2)

Quartz (Druzy) in host rock

SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)

Calcite

Calcium Carbonate (CaCO3)

Quartz with Magnetite or Schorl inclusion

Silicon Dioxide (SiO2) with Fe3O4 or NaFe3(Al6)(BO3)3Si6O18(OH)4

Gold in Quartz Matrix

Native Gold (Au) in Quartz (SiO2)

Quartz / Vein Quartz

Quartz (Silicon Dioxide, SiO2)

Veined Limestone (Micrite) with Quartz/Calcite Veins

Calcium Carbonate (CaCO3) with Silicate or Carbonate inclusions

Wishing Stone (Quartz-Veined Basalt)

Amygdaloidal Basalt with Quartz (SiO2) vein

Quartz with Hematite Inclusions

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Quartz

Silicon Dioxide (SiO2)

Basalt River Stone with Quartz Vein

Basalt (Mafic volcanic rock)