Mixed (Igneous, Sedimentary, Metamorphic, And Minerals)

Citrine

Silicon Dioxide (SiO2)

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

Green Schist

Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)

Gneiss (with Quartz and Mica)

Gneiss

Quartz (likely Milky Quartz or Chalcedony)

Quartz (SiO2 - Silicon Dioxide)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Blue-dyed Quartz Druzy

Silicon Dioxide (SiO2) with artificial pigment

Chalcopyrite

Chalcopyrite (CuFeS2)

Black Star Diopside

Diopside (CaMgSi2O6) with asterism

Strawberry Quartz

Quartz with Hematite inclusions (SiO2 + Fe2O3)

Labradorite

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

Citrine

Silicon dioxide (SiO2)

Epidote

Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Rhodonite

Rhodonite (MnSiO3)

Marble

Recrystallized Carbonate Rock (CaCO3)

Biotite Mica

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

Chalcopyrite

Chalcopyrite (CuFeS2)

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Biotite Mica

K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2

Garnet-Mica Schist

Garnetiferous Porphyroblastic Schist

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Moonstone (Feldspar)

Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)

Shale or Argillite

Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)

Ironstone (likely Limonite or Goethite nodule)

Hydrothermally altered Ferric Hydroxide (FeO(OH)·nH2O)

Citrine

Crystalline Quartz (SiO2) with iron impurities

Rhodonite

Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3

Yellow Quartz

Silicon Dioxide (SiO2)

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Prase or Green Quartz

Silicon Dioxide (SiO2 with actinolite or chlorite inclusions)

Green Aventurine

Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Pegmatite (likely Granitic Pegmatite)

Pegmatite (a coarse-grained igneous rock, often with granitic composition)

Amazonite

K(AlSi3O8)

Amethyst (Chevron or Banded Amethyst)

Silicon Dioxide (SiO2) with trace Iron (Fe)

Petrified Wood

Silicified Wood (primarily SiO₂ - Silicon Dioxide)

Epidote

Epidote - {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)