Not A Rock (Animated Character)

Jasper with Epidote

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Sorosilicate [Ca2Al2Fe3+Si3O12(OH)]

Banded Agate

Cryptocrystalline variety of Quartz (SiO2)

Quartz (Milky/Clear Quartz)

Silicon Dioxide (SiO2)

Bloodstone (Heliotrope)

Cryptocrystalline Quartz (SiO2 with inclusions of Iron Oxide/Chlorite)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Amethyst Quartz

Silicon Dioxide (SiO2) with iron impurities

Serpentine (New Jade)

Antigorite, Lizardite, and Chrysotile (Mg3Si2O5(OH)4)

Carnelian Agate

Silicon Dioxide (SiO2) with Iron Oxide impurities

Limonite (often after Pyrite)

Limonite (FeO(OH)·nH2O)

Obsidian

Volcanic Glass (SiO2)

Dalmatian Jasper

Peralkaline rhyolite with arfvedsonite inclusions

Dendritic Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Blue Moss Agate

Silicon Dioxide (SiO2) with mineral inclusions

Limonite (Iron Ore)

Limonite (Hydrated iron oxide - FeO(OH)·nH2O)

Limonite (Iron Ore)

Goethite and related iron hydroxides (FeO(OH)·nH2O)

Moss Agate

Chalcedony (Silicon Dioxide - SiO2) with inclusions

Diorite (Dalmatian Stone)

Phaneritic Plutonic Diorite

Carnelian

Carnelian (Silicate mineral, SiO2)

Carnelian

SiO2 (Microcrystalline Quartz / Chalcedony)

Amethyst

SiO2 (Silicon Dioxide with iron impurities)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Serpentinite (Commonly known as Serpentine)

Antigorite, Lizardite, or Chrysotile [(Mg,Fe)3Si2O5(OH)4]

African Turquoise

African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Limonite (Iron Ore)

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

Banded Agate (specifically Lace Agate type)

Silicon Dioxide (SiO2)

Amethyst (Tumbled)

Quartz (Silicon Dioxide, SiO2) with iron impurities

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Aventurine Quartz

Silicon Dioxide (SiO2) with inclusions (typically Fuchsite/Mica)

Carnelian Agate

Silicon Dioxide (SiO2) with high Iron Oxide impurities

Bauxite (Laterite)

Hydrated aluminum oxides (Al2O3·nH2O)

New Jade (Serpentine)

Antigorite / Serpentine group (Mg3Si2O5(OH)4)

Amethyst

SiO2 (Silicon Dioxide with Iron impurities)

Limonite / Ironstone Nodule

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

Peach Moonstone

Potassium Aluminum Silicate (KAlSi3O8)

Amethyst

SiO2 (Silicon Dioxide with iron impurities)

Amethyst Quartz

Silicon Dioxide (SiO2) with iron impurities

Amethyst

Quartz (Silicon Dioxide with iron impurities), SiO2

Amethyst

SiO2 (Silicon Dioxide with Iron impurities and irradiation)

Schist

Mica Schist

Yellow Jasper (Chalcedony)

Silicon Dioxide with Iron inclusions (SiO2)