River Quartz Cobble
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary Or Igneous
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Smoky Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Labradorite
Plagioclase Feldspar ((Ca, Na)(Al, Si)4O8)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Sodium Aluminum Silicate Chloride) - Na8(Al6Si6O24)Cl2
mineral
Amethyst
Crystalline Silicon Dioxide with Iron impurities (SiO2)
mineral
Bloodstone
Heliotrope (a variety of Cryptocrystalline Quartz / Jasper, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Lapis Lazuli
Lapis Lazuli (Complex silicate mineral mix including Lazurite, Pyrite, and Calcite)
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Smoky Quartz (SiO2)
mineral
Moonstone
Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Biotite / Black Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Dendritic Agate
Silicon Dioxide (SiO2) with inclusions
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Labradorite (Gray Tumbled)
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Greenstone
Chlorite schist or Epidosite
metamorphic
Dyed Agate
Agate (Silicon dioxide)
Mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Gemstones (Emerald and Yellow Topaz or Citrine)
Beryl (Be3Al2Si6O18) and Quartz (SiO2) or Topaz (Al2SiO4(F,OH)2)
mineral
Quartz (Amethyst variety)
Silicon Dioxide (SiO2)
mineral
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Amazonite
K(AlSi3O8)
mineral
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sunstone
(Ca,Na)((Al,Si)2Si2)O8 (Plagioclase Feldspar)
mineral
Muscovite Mica
Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2
mineral
Blue Sapphire (in a faceted jewelry setting)
Corundum (Al2O3) with trace Iron and Titanium
mineral
Moss Agate with Jasper
Chalcedony (SiO2 with inclusions)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Chevron Amethyst
Silicon dioxide, SiO2 (Quartz variety)
Mineral
White Sapphire
Corundum (Al2O3)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral