Mineral (Primary Constituent)

Amethyst (Quartz)

Silicon Dioxide (SiO2) with iron impurities

Ocean Jasper

Orbicular Jasper (Silicon Dioxide with impurities), SiO2

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Quartz Vein in Siltstone

SiO2 (Quartz) on clastic sedimentary matrix

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Dragon Blood Jasper (Epidote with Piedmontite or Quartz)

Epidote-rich Quartzite / SiO2 with (Ca2(Al2,Fe)(Si2O7)(SiO4)O(OH))

Ferruginous Quartz

Quartz (Silicon Dioxide) with Iron Inclusion, SiO2

Agate Geode with Quartz Druzy

Chalcedony (SiO2) and Quartz (SiO2)

Limonite Pseudomorph after Pyrite

Limonite (FeO(OH)·nH2O) replacing Pyrite (FeS2)

Prehnite on Basalt

Prehnite - Ca2Al(AlSi3O10)(OH)2

Tiger's Eye

Silicon Dioxide (SiO2) with iron oxide inclusions

Rutilated Quartz

Silicon Dioxide with Titanium Dioxide (SiO2 with TiO2 inclusions)

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Chalcanthite (Likely Synthetic/Lab-Grown)

Hydrated copper(II) sulfate (CuSO4·5H2O)

Ocean Jasper

Orbicular Jasper/Microcrystalline Quartz (SiO2)

Labradorite

Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8

Libyan Desert Glass

Tektite (high-silica impact glass), SiO2

Blue Apatite

Apatite-(CaF), Ca5(PO4)3F

Amethyst

Silicon dioxide / Violet Quartz (SiO2)

Diamond Drill Core (Greenschist and Quartzite)

Chlorite Schist / Meta-quartzite (Metamorphic Rock Core Sample)

Larimar

Pectolite (NaCa2Si3O8(OH))

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Amethyst

Silicon dioxide (SiO2) with iron impurities

Moss Agate

Silicon Dioxide with inclusions (SiO2)

Quartz Druzy on Matrix (with Copper Mineralization)

Silicon Dioxide (SiO2) with Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)

Lapis Lazuli (Tumbled Stone)

Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (Lazulite-rich Metamorphic Rock)

Garnet (Almandine/Pyrope series)

Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)

Pink Quartz (Rose Quartz variant)

Silicon Dioxide (SiO2)

Amethyst Quartz Pebble

Silicon Dioxide (SiO2) with iron impurities

Chrysocolla on Quartz

Chrysocolla (Cu2−xAlx(H2−xSi2O5)(OH)4·nH2O) often associated with Quartz (SiO2)

Moss Agate

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

Black Tourmaline in Quartz

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) in Silicon Dioxide (SiO2)

Red Vanadinite on Matrix

Vanadinite (Pb5(VO4)3Cl)

Dragon Vein Agate

Chalcedony (Quartz) - SiO2

Pyromorphite on Epidote

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

Hypersthene

Hypersthene ((Mg,Fe)SiO₃)

Plume Agate

Silicon Dioxide (SiO2)

Banded Iron Formation

Banded Iron Formation (BIF)

Vesicular Basalt with Pyrite

Basalt (MgFe2+)(Si,Al)2O6 containing FeS2 inclusions

Labradorite

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

Sunstone

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

Amethyst

Silicon Dioxide with iron impurities (SiO2)