Citrine
Crystalline Quartz (SiO2) with iron impurities
mineral
Category
Igneous, Sedimentary, And Metamorphic
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Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Amethyst (Variety of Quartz)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
SiO2 (Silicon Dioxide)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sunstone
Oligoclase (Feldspar variety), (Na,Ca)(Si,Al)4O8
mineral
Citrine
Citrine (Silicon Dioxide - SiO2)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Peacock Ore
Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz with Iron Stains
Silicon Dioxide (SiO2) with FeOx inclusions
mineral
Peach Moonstone
Potassium Aluminum Silicate, KAlSi3O8
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Smoky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Greenstone
Metabasalt / Greenschist
metamorphic
Biotite Mica
K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2
Mineral
Garnet
Almandine/Pyrope Garnet (Silicate Mineral Group)
mineral
Epidotite (Unakite-related)
Epidote-rich rock
metamorphic
Chlorite (Small Flakes/Sand)
Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)
mineral
Epidote
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
mineral
Unakite
Epidotized Granite
metamorphic
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Moonstone
Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)
mineral
Ruby (Corundum)
Corundum (Aluminum Oxide) with chromium trace elements, Al2O3
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Mineral (Variety of Quartz)
Labradorite
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
mineral
Biotite Schist
Biotite Schist (predominantly K(Mg,Fe)3AlSi3O10(OH,F)2)
metamorphic
Riverstone (Quartzite or Siltstone cobble)
Quartzite (primarily SiO2)
metamorphic
Garnet in Schist (Mica Schist with Garnet Inclusion)
Garnetiferous Mica Schist (X3Al2(SiO4)3)
metamorphic
Mica Schist
Mica Schist
metamorphic
Greenschist
Chlorite-actinolite schist
metamorphic
Venetian Gold Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Muscovite (Mica)
Muscovite - KAl2(AlSi3O10)(OH)2
Mineral