Sedimentary (Secondary Mineral Formation)

Chalcedony (Common Opal or Agate variant)

Silicon Dioxide (SiO₂)

Red Sandstone

Clastic Terrigenous Sedimentary Rock (typically Hematitic Quartz Arenite or Arkose)

Kyanite

Kyanite (Al2SiO5)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Sedimentary Breccia

Breccia (Clastic Sedimentary Rock)

Moqui Marble (Concretion)

Iron oxide concretion (Goethite/Hematite and Sandstone)

Clear Quartz (or Rock Crystal)

Quartz (SiO₂)

Vanadinite

Lead Chlorovanadate, Pb5(VO4)3Cl

Red Jasper

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Limonite-stained Chert/Jasper

Microcrystalline Quartz (SiO2) with Iron Oxides (FeO(OH)·nH2O)

Quartz vein in Host Rock

Crystalline Silicon Dioxide (SiO2) in Lithic Matrix

River Pebble (Quartz/Jasper)

Silicon Dioxide (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions

Biotite Mica

Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)

Schist

Schist (various mineralogical compositions including mica, chlorite, talc, etc.)

Yellow Ochre / Limonite

Limonite (Hydrated Iron(III) Oxide-Hydroxide, FeO(OH)·nH2O)

Rutilated Quartz

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

Milky Quartz

Silicon Dioxide (SiO2)

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

Chert (Green variety)

Microcrystalline Opaline/Quartz (SiO2)

Calcite

Calcite (CaCO3)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Botryoidal Chalcedony (Agate/Desert Rose Chalcedony)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock)

Sandstone (lithic wacke/arenite)

Clastic sedimentary rock (primarily SiO2)

Limonite/Goethite Gossan

FeO(OH)·nH2O (Hydrated iron oxide)

Iridescent Ammonite Fossil

Ammonoidea (subclass); Composition: Aragonite (Calcium Carbonate, CaCO3) often replaced by Calcite or Pyrite

Conglomerate

Conglomerate (clastic sedimentary rock)

Chakra Stone Tower (Composite Multi-Mineral)

Crystalline Silicon Dioxide composite (SiO2) with various inclusions

Amygdaloidal Basalt

Amygdaloidal Mafic Volcanic Rock

Satin Spar (often marketed as Selenite)

Fibrous Gypsum (CaSO4·2H2O)

Chrysocolla in Matrix

Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·nH2O

Amygdaloidal Basalt with Zeolite/Quartz Infill

Amygdaloidal Basalt (Host: (Mg,Fe)2SiO4 / CaAl2Si2O8; Infill: SiO2 or Na2Al2Si3O10·2H2O)

Banded Rock (likely Quartz-rich)

Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals

Limestone (Porous/Travertine variant)

Sedimentary Calcium Carbonate (CaCO3)

Picture Jasper

Silicon Dioxide (SiO2)

Diamond

Diamond (pure Carbon, C)

Red Jasper (Chert)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Jasper (Sedimentary variety)

Silicon Dioxide (SiO2) with impurities

White Quartz

Quartz (SiO2)

Quartz

Quartz (SiO₂ - Silicon Dioxide)