Igneous, Sedimentary, Or Metamorphic (Mineral Based)

Quartz Mineral

Silicon Dioxide (SiO2)

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Magnetite (Lodestone)

Magnetite (Fe3O4)

Travertine

Terrestrial Sedimentary Rock (CaCO3)

Rhodochrosite

Manganese carbonate (MnCO3)

Graphite

Graphite (Carbon, C)

Chert (specifically Jasper/Carnelian Agate)

Microcrystalline Quartz (SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Bornite

Bornite (Cu5FeS4)

Dalmatian Stone (Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Limonite after Pyrite (Prophecy Stone or Ironstone Concretion)

Goethite/Limonite pseudomorph after Pyrite/Marcasite (FeO(OH)·nH2O)

Quartz (Milk Quartz / Massive Quartz)

Silicon Dioxide (SiO2)

Red Garnet (likely Almandine or Pyrope)

Garnet group: X3Y2(SiO4)3 (e.g., Almandine: Fe3Al2Si3O12)

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Granitic Pegmatite (Muscovite and Quartz)

Pegmatite (KAl2(AlSi3O10)(OH)2 / SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions

Emerald / Green Beryl

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Sandstone Geode (Unbroken)

Siliciclastic sedimentary rock (primarily Quartz)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Quartz (likely a form of massive or vein quartz)

Quartz (SiO₂)

Green Fluorite

Calcium Fluoride (CaF2)

Schist

Mica Schist

Muscovite Mica (Granitic Pegmatite)

Muscovite - KAl2(AlSi3O10)(OH)2

Sandstone

Arenite (composed primarily of Quartz: SiO2)

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

Sandstone

Arenite (primarily SiO2)

Quartz

Silicon Dioxide (SiO2)

Graphite

Graphite (Native Carbon, C)

Quartz (Milky/Crystalline variety)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon dioxide (SiO2)

Schist (Biotite Schist)

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

Asphalt / Bituminous Aggregate

Bituminous mixture (Hydrocarbon-based sediment)

Sandstone (Red Sandstone)

Arenite (SiO2 based with Fe2O3 staining)

Biotite Schist

Biotite Schist

Quartz (Pale Rose or Milky Variety)

Silicon Dioxide (SiO2)

Magnetite (Lodestone variety)

Magnetite (Fe3O4)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Milky Variant)

Silicon Dioxide (SiO2)