Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Category
Mineral, Jewelry
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Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Red Jasper
Silicon Dioxide with Iron inclusions (SiO2 + Fe2O3)
sedimentary
Amethyst
Silicon dioxide with iron impurities (SiO2:Fe3+)
mineral
Aquamarine (Rough)
Beryl (Be3Al2Si6O18)
mineral
Fuchsite with Ruby
Cr-rich Muscovite with Corundum (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Prasiolite
Silicon Dioxide (SiO2) with iron impurities
mineral
Pink Thulite
Thulite (Ca2Al3(SiO4)3(OH)) - Pink Zoisite
Mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Amethyst
Amethyst (Silicon Dioxide, SiO2 with Iron impurities)
mineral
Rough Amethyst Quartz
Silicon Dioxide with Iron impurities (SiO2)
mineral
Specular Hematite (on Schist/Matrix)
Hematite (Alpha-Fe2O3)
mineral
Gold-bearing Quartz
Lode Gold in Silicon Dioxide (SiO2)
mineral
Jasper with Agate Inclusions
Jasper (Silicon Dioxide, SiO2) with Chalcedony/Agate
sedimentary
Blue Lace Agate
Silicon Dioxide (SiO2)
mineral
Amazonite
Microline Feldspar (KAlSi3O8)
mineral
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Mineral
Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Snowflake Obsidian
Spherulitic Obsidian (primarily SiO2 with Cristobalite inclusions)
igneous
Hawk's Eye (Blue Tiger's Eye)
Quartz (fibrous crocidolite variety)
Mineral
Amazonite
Tectosilicate Microcline (KAlSi3O8)
mineral
Amethyst
Silicon Dioxide (SiO2) with traces of Iron (Fe3+)
mineral
Native Copper within Host Rock
Native Copper (Cu)
Mineral
Peach Moonstone
Orthoclase Feldspar (KAlSi3O8)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Amethyst
Amethyst (Silicon Dioxide SiO2 + Fe4+)
mineral
Gold flakes
Native Gold (Au)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Quartz (Smoky or Citrine variety)
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon dioxide with iron impurities (SiO2)
mineral
Amethyst
SiO2 (Silicon Dioxide with iron impurities)
mineral
Tiger's Eye (Rough)
Pseudomorph of Quartz after Crocidolite (SiO2 with FeOOH inclusions)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony (Botryoidal/Chalcedony Rose)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Citrine or Smoky variety)
Silicon Dioxide (SiO2)
mineral