Igneous, Sedimentary, Metamorphic, And Mineral

Citrine

Silicon Dioxide (SiO2)

White Quartz Pebble

Silicon Dioxide (SiO2)

Moonstone

Orthoclase/Albite (KAlSi3O8 / NaAlSi3O8) with Adularescence

Peach Moonstone

Orthoclase Feldspar (KAlSi3O8)

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Laterite

Laterite (no specific mineral formula as it's a rock type)

Marble

Recrystallized Calcite (CaCO3)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Black Tourmaline (Schorl)

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Quartz Geode

Silicon Dioxide (SiO2)

Fluorite

Fluoride (Calcium Fluoride - CaF2)

Yellow Quartz (Citrine/Yellow Jasper)

Silicon Dioxide (SiO2)

Calcite

Calcium Carbonate (CaCO3)

Hematite

Iron(III) oxide (Fe2O3)

Optical Calcite (Iceland Spar)

Calcite (Calcium Carbonate, CaCO3)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Iron-stained Quartzite / Chert

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Dalmatian Jasper / Dalmatian Stone

Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)

Potassium Feldspar and Quartz

KAlSi3O8 (Potassium Feldspar) and SiO2 (Quartz)

Greenstone

Greenschist / Greenstone (Chlorite-Epidote facies)

Goethite pseudomorph after Pyrite

Goethite (FeO(OH)) pseudomorph after Pyrite (FeS2)

Quartz Geode (with possible Manganese or Goethite coating)

Silicon Dioxide (SiO2)

Kyanite

Kyanite (Al2SiO5)

Pyrite

Iron Disulfide (FeS2)

Garnet (Almandine or Spessartine likely)

Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)

Hematite

Iron(III) oxide (Fe2O3)

Orange Calcite

Calcium Carbonate (CaCO3)

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Dalmation Jasper (or Dalmation Stone)

Dalmation Stone (composed of Perthite, Quartz, and Arfvedsonite)

Greenstone

Greenschist (commonly containing Chlorite, Actinolite, and Epidote)

Marble

Recrystallized Calcite (CaCO3)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Quartz (Iron-stained)

Silicon Dioxide (SiO2) with Iron Oxide impurities

Dalmatian Jasper

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Rhodonite

Manganese Inosilicate (MnSiO3)

Muscovite Schist

Mica Schist (primarily KAl2(AlSi3O10)(OH)2)

Nephrite Jade

Tremolite-Actinolite solid solution, Ca2(Mg,Fe)5Si8O22(OH)2

Iron-Stained Quartzite

Recrystallized Meta-Quartzite (primarily SiO2)