Clear Quartz with Limonite
Silicon Dioxide (SiO2) with Hydrated Iron Oxides
mineral
Category
Mineral (Biogenic)
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Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst and Titanium Treated Druzy
Silicon Dioxide (SiO2) with trace impurities including Iron
mineral
Peach Moonstone
Orthoclase (Potassium Aluminum Silicate, KAlSi3O8)
mineral
Chrysocolla on Quartz
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) with Quartz (SiO2)
mineral
Amethyst
Silicon dioxide with iron impurities (SiO2)
mineral
Sunstone (Feldspar)
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Zoisite with Ruby (Anyolite)
Anyolite (Ca2Al3(SiO4)3(OH) + (Hb, Al, Cr)2O3)
metamorphic
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Alexandrite
Chrysoberyl (BeAl2O4)
mineral
Amethyst (Hematoid Quartz)
Silicon Dioxide (SiO2) with Ferric Iron inclusions
mineral
Jasper (Petrified Wood variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Amethyst
SiO2 (Silicon Dioxide with iron impurities)
mineral
Rutilated Quartz
Quartz with Rutile inclusions (SiO2 with TiO2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)
Mineral
Almandine Garnet in Matrix
Almandine (Fe3Al2(SiO4)3)
metamorphic
Smoky Quartz (Polished)
Silicon Dioxide (SiO2)
mineral
Amethyst
SiO2 (Silicon Dioxide)
mineral
Fairburn Agate
Cryptocrystalline Quartz (SiO2)
mineral
Botryoidal Chalcedony Geode
Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz
mineral
Orange Quartz with Epidote
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate hydroxide (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Carnelian
Chalcedony (SiO2) with Iron Oxide impurities
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Mineral
Prasiolite (Green Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Tiger's Eye
Pseudomorph of Macrocrystalline Quartz after Crocidolite (SiO2)
mineral
Graphic Granite
Graphic Granite (Granitic Pegmatite)
igneous
Amethyst
Silicon Dioxide (SiO2)
mineral
Agate
SiO2
Mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Amethyst (Tumbled Chips)
Amethyst (Silicon Dioxide with Iron impurities, SiO2)
mineral
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with Fe2+ impurities)
mineral
Copper Ore (with Azurite and Malachite)
Cuprite, Azurite (Cu3(CO3)2(OH)2), Malachite (Cu2(CO3)(OH)2)
mineral
Native Copper in Basalt
Amygdaloidal Basalt with Native Copper (Cu)
metamorphic
Moonstone (Tumbled)
Orthoclase Feldspar (KAlSi3O8) with inclusions of Albite
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral