Mineral, Jewelry

Green Aventurine

Si O2 (Silicon Dioxide with Fuchsite inclusions)

Garnet-bearing Schist

Almandine Garnet [Fe3Al2(SiO4)3] in Micaceous Schist

Botryoidal Chalcedony (Agate/Desert Rose Chalcedony)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Amethyst

Amethyst (Silicon Dioxide - SiO2 with ferric iron impurities)

Amethyst (Polished/Carved Crystal)

Silicon Dioxide (SiO2) with trace Iron (Fe)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Amazonite

Potassium feldspar (KAlSi3O8)

Agate Geode with Quartz Druzy

Chalcedony (SiO2) and Quartz (SiO2)

Amethyst (Quartz)

Silicon Dioxide (SiO2) with iron impurities

Druzy Quartz on Limestone

Silicon Dioxide (SiO2)

Prase or Green Quartz

Silicon Dioxide (SiO2 with actinolite or chlorite inclusions)

Petrified Wood

Silicified wood (primarily SiO2 - Silicon Dioxide/Quartz)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Nuummite

Orthoamphibole (Gedrite-Anthophyllite series)

Chalcedony on Matrix

Silicon Dioxide (SiO2)

Amethyst

Amethyst (Varietal of Quartz), SiO2 with traces of Iron (Fe3+)

Clear Quartz Cluster

Silicon Dioxide (SiO2)

Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Smoky Quartz

Smoky Quartz (SiO2)

Ocean Jasper

Orbicular Jasper (Silicon Dioxide with impurities), SiO2

Labradorite

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Amethyst

Silicon Dioxide (SiO2) with Iron impurities

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Labradorite

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

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Amethyst (Tumbled)

Silicon Dioxide (SiO2) with iron impurities

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Ocean Jasper

Orbicular Jasper/Microcrystalline Quartz (SiO2)

Gold-bearing Quartz

Native Gold (Au) in Quartz (SiO2) matrix

Dragon Blood Jasper (Epidote with Piedmontite or Quartz)

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

Tiger's Eye

Silicon Dioxide (SiO2) with iron oxide inclusions

Rutilated Quartz

Silicon Dioxide with Titanium Dioxide (SiO2 with TiO2 inclusions)

Lapis Lazuli

Lapis Lazuli (Complex silicate mineral mixture primarily Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Larimar

Pectolite (NaCa2Si3O8(OH))

Epidosite

Epidosite (consisting primarily of Epidote Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz SiO2)

Amethyst

Silicon dioxide / Violet Quartz (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)