Mineral In Metamorphic Rock

Aventurine (specifically Green Aventurine)

Silicon Dioxide (Quartz) with inclusions of Fuchsite; SiO2 + K(Al,Cr)2AlSi3O10(OH)2

Quartz (Druzy)

Silicon Dioxide (SiO2)

Jade

Jadeite or Nephrite (both are commonly referred to as 'jade'). Jadeite: NaAlSi2O6; Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2.

Red Sandstone

Arenite (with Iron Oxide)

Nephrite Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Amazonite

Potassium aluminum silicate (KAlSi3O8)

Bicolor Quartz Pebble

Silicon Dioxide (SiO2) with mineral inclusions

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Ruby

Corundum (Al2O3 with Chromium traces)

Pyrite

Iron Sulfide (FeS2)

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Pyrite

Iron Sulfide (FeS2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Sandstone

Arenite (SiO2 primarily)

Sandstone

Arenite (composed primarily of SiO2)

Greasy Quartz (likely carved Milky Quartz or Aventurine)

Silicon Dioxide (SiO2)

Quartz (Milky or Grainy Variety)

Silicon Dioxide (SiO2)

Citrine Quartz

Silicon Dioxide (SiO2)

Shale

Argillaceous Rock

Citrine

Quartz (Silicon Dioxide - SiO2)

Amazonite

K(AlSi3O8) - Microcline variant

Limestone with Quartz or Calcite Veining

Calcium Carbonate (CaCO3) matrix with SiO2 or CaCO3 inclusions

Kyanite in Quartz

Al2SiO5 in SiO2

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30 (Potassium Sodium Lithium Iron Manganese Aluminum Silicate)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

Olivine in Basalt (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) / Scoriaceous Basalt (Host Rock)

Sandstone (Glacial Cobble)

Arenite / Sedimentary Rock (primarily SiO2)

Marble

Recrystallized Calcite / Dolomite (CaCO3)

Sapphire

Corundum (Al2O3)

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Quartz Geode

Silicon Dioxide (SiO2) in Geode form

Plume Agate

Silicon Dioxide (SiO2)

Granite

Plutonic Igneous Rock (composed typically of SiO2, Al2O3, K2O, Na2O, CaO)

Sandstone with Manganese Dendrites/Oxide coatings

Arenite with Pyrolusite and Romanechite (MnO2)