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Amethyst Quartz: The purple gemstone Amethyst information and pictures Amethyst is the purple variety of the mineral Quartz, and is its most famous and valuable gem variety Quartz also contains other gemstones such as Citrine, Rose Quartz, and Smoky Quartz The color of Amethyst is most often caused by iron impurities, though it can also be colored by natural radiation exposure Amethyst is sometimes heat treated to deepen the color, or to transform it into
Amethyst: The purple Quartz mineral Amethyst information and pictures Amethyst is a well known mineral and gemstone It is the purple variety of the mineral Quartz, and its most valuable and prized variety Its name derives from the Greek "amethystos", which means "not drunken", as Amethyst in antiquity was thought to ward off drunkenness The color of some Amethyst specimens from certain localities slowly fade upon prolonged exposure to light When used as a
Quartz: The gemstone Quartz information and pictures Amethyst Amethyst, the purple variety, is the most popular and valuable Quartz gemstone Amethyst ranges from light to dark purple See the Amethyst gemstone page for more details Citrine Citrine is the yellow, orange, or reddish-brown variety of Quartz It is usually colored by heat treatment of Amethyst or Smoky Quartz
Amethyst Quartz - The Mineral and Gemstone Kingdom Amethyst Quartz - The Mineral and Gemstone Kingdom Mixture of Amethyst and Milky Quartz (or clear Quartz) It is purple on top and white or clear on the bottom It may also be banded purple and white Amethyst Quartz is usually tumbled or polished into beads
Green Amethyst - The Mineral and Gemstone Kingdom Green Amethyst - The Mineral and Gemstone Kingdom Light green gem form of Quartz that is artificially colored by heat-treating certain types of Amethyst Also known as "Prasiolite"
Quartz: The mineral Quartz information and pictures Much Amethyst is also heat treated to intensify color, and a green transparent form known as "Green Amethyst" or "Prasiolite" is formed by heat treating certain types of Amethyst There is also a transparent sky blue form of Quartz crystals, as well as a wildly iridescent type that are synthetically colored by irradiation of gold
Ametrine: The gemstone Ametrine (Amethyst, Citrine) info pictures Although Amethyst, the purple variety of Quartz, and Citrine, the yellow orange variety of Quartz belong to the same scientific mineral classification, they have always been distinguished as individual gemstones The unique color combination of Ametrine has sparked an interest and appeal to this distinctive gemstone
Brazilian Amethyst - The Mineral and Gemstone Kingdom Brazilian Amethyst - The Mineral and Gemstone Kingdom Amethyst originating from Brazil This terms is also sometimes used in the gem trade to refer to any South American Amethyst
Citrine: The quartz mineral Citrine information and pictures Citrine is the yellow to brownish-red variety of the mineral Quartz It is a widely used as a gemstone, and after Amethyst it is the most popular Quartz gem Most Citrine is formed by heat treating purple Amethyst Citrine may also be produced by heat-treating Smoky Quartz from certain localities In some Amethyst deposits, the Amethyst has been partially or fully changed over to yellow