Amethyst
Silicon Dioxide (SiO2) with iron impurities
Category
Browse mineral (iron ore) specimens identified by the Rock Identifier community.
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst Quartz Druse
Silicon Dioxide (SiO2) with iron impurities
Chevron Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide with iron impurities (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide (SiO2) with Iron impurities
Amethyst (Faceted Gemstone)
Silicon Dioxide (SiO2) with iron impurities
Blue Sapphire (Ceylon)
Corundum (Al2O3) with traces of Iron and Titanium
Yellow Jasper
Silicon Dioxide with iron inclusions (SiO2)
Amethyst (Tumbled/Polished)
Silicon Dioxide (SiO2) with iron impurities
Amethyst (specifically Chevron Amethyst or Dream Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
Blue Sapphire
Corundum (Al2O3) with traces of Iron and Titanium
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon dioxide (SiO2) with iron impurities
Heat-Treated Citrine (Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Quartz (SiO2) with trace iron impurities
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions
Amethyst (Geode Fragment)
Silicon Dioxide (SiO2 with iron impurities)
Amethyst (Faceted)
Silicon Dioxide with Iron impurities (SiO2)
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions
Yellow Jasper
Jasper (Silica-rich Microcrystalline Quartz, SiO2)
Serpentine
Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Fluorite and Red Jasper
Fluorite (Calcium Fluoride, CaF2) and Red Jasper (Silicon Dioxide, SiO2)
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
Rose Quartz
Silicon Dioxide (SiO2)
Carnelian
Carnelian (Silicon Dioxide, SiO2)
Carnelian (Orange Agate)
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Red Jasper
Silicon dioxide (SiO2) with iron oxide impurities
Citrine
Yellow Quartz (SiO2)
Amethyst
Amethyst (variety of Quartz, SiO2)