Not A Rock (Animated Character)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Epidote with Quartz and Feldspar

Ca2(Al2,Fe3+)(SiO4)3(OH) (Epidote complex)

Chert (specifically Yellow/Brown Chert or Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Limonite / Iron Oxide Concretion

FeO(OH)·nH2O (Hydrated iron oxide)

Limonite (Ironstone)

FeO(OH)·nH2O (Hydrous ferric oxides)

Limonite

FeO(OH)•nH2O

Limonite

FeO(OH)•nH2O

Limonite

FeO(OH)•nH2O

Obsidian

Obsidian (Volcanic Glass)

Quartz Geode (likely within Limestone or Dolomite matrix)

Quartz (SiO₂)

Serpentine-rich pebble

Serpentinite; chiefly serpentine-group minerals (chrysotile, lizardite, antigorite), commonly with magnetite and minor olivine/pyroxene

Moss Agate / Carnelian Agate

Silicon Dioxide (SiO2) with iron and manganese inclusions

Vesicular basalt (weathered scoriaceous basalt)

Basalt; chiefly plagioclase, pyroxene, and commonly olivine (approximately 45–52% SiO₂)

Limonite/Goethite (Iron Ore)

Hydrous ferric oxides (FeO(OH)·nH2O)

Granite-like rock

Felsic intrusive igneous rock, likely granite or granodiorite

Quartz-rich granitic pegmatite

Pegmatite, composed mainly of quartz (SiO₂), feldspar, and minor mica or iron-oxide minerals

Hematite

Hematite (Fe2O3)

Quartzite

Quartzite (SiO2 equivalent)

Banded quartz-rich metamorphic rock (likely gneiss or quartzite)

Banded quartz–feldspar–mica rock; exact identification requires testing

Amethyst

Silicon dioxide with iron impurities (SiO2)

Amethyst

Quartz (SiO2 with Iron impurities)

Banded gneiss (likely biotite-rich gneiss)

Gneiss; chiefly quartz, feldspar, biotite, and possibly hornblende

Gold Flakes

Native Gold (Au)

Obsidian

Volcanic glass (SiO2 - Silicon Dioxide with impurities)

Banded Calcite (Mexican Onyx)

Calcium Carbonate (CaCO3)

Serpentinite pebble

Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, with magnetite and accessory chlorite/talc

Mosasaur Tooth Fossil

Mosasauridae (likely Prognathodon or Mosasaurus)

Quartz Pebble

Silicon Dioxide (SiO2)

Green aventurine (likely)

Quartzite dominated by quartz (SiO₂), with fuchsite mica inclusions

Limonite (Ironstone)

FeO(OH)·nH2O

Limonite

FeO(OH)·nH2O

Agate (Dyed Blue)

SiO2 (Silicon Dioxide)

Amethyst Geode

Silicon Dioxide (SiO2) with trace Iron (Fe3+) impurities

Limonite

FeO(OH)·nH2O

Limonite Concretion / Ironstone

Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O

Obsidian

Obsidian (Volcanic Glass, ~70% SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Fire Quartz (Hematoid Quartz)

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Green Fluorite

Calcium Fluoride (CaF2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Lepidolite

K(Li,Al)3(Si,Al)4O10(F,OH)2

Green Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)