Metamorphic Rock (For Nephrite And Some Jadeite); Mineral (For Jadeite)

Limonite Concretion (Ironstone)

Limonite (FeO(OH)·nH2O) / Goethite

Peridot

Olivine ((Mg,Fe)2SiO4)

Basalt with Vesicular Texture (Beach Cobble)

Vesicular Basalt (Aphanitic Igneous Rock)

Quartz Conglomerate

Quartz Conglomerate (clastic sedimentary rock)

Unakite (Epidotized Granite)

Epidotized Granite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))

Sandstone (Ferruginous)

Arenite with Iron Oxide cement

Milky Quartz

Milky Quartz (Silicon Dioxide, SiO2)

Granodiorite

Granodiorite (Na,Ca)(Si,Al)4O8

Caliche (with Lichen Cover)

Calcium carbonate-cemented soil layer (CaCO3)

Sandstone

Arenite (SiO2 based)

Quartzite (River Pebble)

Quartzite (Mainly SiO2)

Ferruginous Sandstone (Gozzan)

Iron-rich clastic sedimentary rock with Limonite/Goethite

Milky Quartz (Tumbled)

Quartz (Silicon Dioxide, SiO2)

Basalt (with possible weathering or secondary mineral crust)

Basalt (Aphanitic Mafic Igneous Rock)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Amethyst

SiO2 (Amethyst is a variety of Quartz)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Olivine (Peridot)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Chalcedony with Druzy Quartz Geode

Silicon Dioxide (SiO2)

Septarian Nodule (Galt)

Calcareous concretion / Septarian concretion

Ferruginous Sandstone

Sandstone (arenite) with Limonite/Goethite cement

Milky Quartz

Silicon Dioxide (SiO2)

Ruby (Raw/Rough)

Corundum (Al2O3 with Chromium trace)

Pyrite (on host rock/ore)

Iron Sulfide (FeS2)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Vesicular Basalt (Lava Rock)

Aphanitic Mafic Igneous Rock

Basalt with Olivine Phenocrysts

Porphyritic Basalt (containing Mg2SiO4 - Fe2SiO4)

Ferruginous Sandstone (Gozzanous)

SiO2 (Quartz) with FeO(OH) (Goethite) or Fe2O3 (Hematite) coating

Chalcedony (Yellow Agate)

Cryptocrystalline Quartz (SiO2)

Tufa (Vesicular Limestone)

Tufa (form of Calcium Carbonate, CaCO3)

Vesicular Basalt with Quartz/Chalcedony

Vesicular Basalt (primarily Plagioclase, Pyroxene, and Olivine with SiO2 infill)

Quartz with Limonite Staining

Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)

Sandstone with Ironstone Concretion

Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

Basalt (with possible Olivine inclusions)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Rose Quartz

Quartz (Silicon Dioxide with trace inclusions of dumortierite, Al7(BO3)(SiO4)3O3)

Red Sandstone

Arenite (Ferruginous Sandstone)

Barite Rose on Marcasite

Barium Sulfate (BaSO4) on Iron Sulfide (FeS2)

Sodalite

Sodalite [Na8(Al6Si6O24)Cl2]

Calcite on Limestone (or Fossil)

Calcium Carbonate (CaCO3)

Quartz Geode

Silicon Dioxide (SiO2) within a secondary sedimentary structure