Not A Rock (Animated Character)

Carnelian

Carnelian (SiO2)

White Opal

Hydrated Silica (SiO2·nH2O)

Quartz (Clear Quartz and Rose Quartz variants)

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Milky Quartz

Silicon Dioxide (SiO2)

Carnelian

Carnelian (SiO2 variant)

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Tumbled Amethyst

Quartz (SiO2) with trace amounts of Iron (Fe)

Shale with Vein Infillings

Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.

River Pebble (Siltstone/Mudstone)

Clastic sedimentary rock

Agate (or Banded Agate)

Agate (a variety of Chalcedony, which is a cryptocrystalline form of Quartz); Chemical Formula: SiO₂ (Silicon Dioxide)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Peridotite

Peridotite (Ultramafic Rock)

Apatite

Fluorapatite, Chlorapatite, and Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Red Jasper

Silicon dioxide with hematite impurities (SiO2 + Fe2O3)

Slate

Foliated Metamorphic Rock

Quartzite Pebble

Quartzite (primarily SiO2)

Quartz with Iron Stains

Quartz (SiO2) with iron oxide/hydroxide staining

Limestone (River Stone)

Limestone (Calcium Carbonate, CaCO3)

Quartzite

Quartzite (Silicon Dioxide, SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Painted River Rock (likely Quartzite or Granite)

Quartzite or Granitic Gneiss (painted)

Limonite (Ironstone)

Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Matrix

Jasper (River pebble)

Jasper / Silicon Dioxide (SiO2)

Limonite Concretion (Ironstone)

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

Sandstone (likely a river or beach pebble)

Sandstone (a clastic sedimentary rock)

Baroque Pearl (and potentially a small Sapphire/Blue Topaz)

Pearl: Calcium Carbonate (aragonite or calcite) with conchiolin. Sapphire: Aluminum Oxide (Al2O3). Blue Topaz: Al2SiO4(F,OH)2.

Banded Chert (River Cobble)

Microcrystalline Quartz (SiO2)

Garnet Schist

Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)

Fluorite

Calcium Fluoride (CaF2)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Disulfide (FeS2)

Botryoidal Chalcedony with Calcite

Chalcedony (SiO2 with accessory minerals, likely CaCO3)

Quartzite

Metamorphic Quartzite (SiO2)

Iron-stained Quartzite

Metamorphosed Quartz (SiO2) with Hematite/Limonite impurities

Sandstone (likely Arkosic or Lithic Sandstone)

Arenite (composed primarily of SiO2 with various lithic fragments)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)