Mineral (Found In Igneous And Metamorphic Rocks)

Biotite / Black Mica

Biotite K(Mg,Fe)3AlSi3O10(F,OH)2

Quartz (Iron-Stained Quartz Pebble)

Silicon Dioxide (SiO2)

Quartz Crystal

Silicon Dioxide (SiO2)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine/Yellow Jasper mix)

Silicon Dioxide (SiO2)

Agate

Silicon dioxide (Chalcedony), SiO2

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Milky and Ferruginous Quartz

Silicon Dioxide (SiO2)

Agate

Silicon dioxide (Chalcedony), SiO2

Banded Agate

Cryptocrystalline Quartz (SiO2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Quartz (Clear or Milky)

Silicon Dioxide (SiO2)

Tumbled Amethyst

Quartz (Silicon Dioxide, SiO2, colored by iron impurities)

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Aventurine

Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Quartz

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss

Gneiss (Metamorphic Rock)

Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Quartz (Silicon Dioxide, SiO2)

Green Aventurine

Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Gneiss

Metamorphic Gneiss

Labradorite

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

Biotite (Black Mica) in Host Rock

K(Mg,Fe)3AlSi3O10(OH,F)2

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Pink Feldspar (Orthoclase)

Orthoclase Feldspar (KAlSi3O8)

Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Pyromorphite on Epidote

Pyromorphite [Pb5(PO4)3Cl] and Epidote [Ca2(Al2,Fe3+)(SiO4)3(OH)]

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)