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A Rose de France amethyst is a member of the amethyst family of gemstones. It is defined by its markedly light shade of the purple known to the amethyst family. The color is reminiscent of a lavender/lilac shade. Amethyst is rated at 7 on the Moh's Scale of Hardness. Because of its relative hardness and having no particular warnings for care, Amethyst can be used for all jewelry purposes. Amethyst is found in a variety of hues of purple including deep purple, light lilac, lavender, and mauve. The pale lilac colors, coined Rose De France, were once considered undesirable but have recently become a popular fashion favorite due to intensive and clever marketing. Regardless of this popularity, the deep, rich purple colors are still the most sought-after. The value of Amethyst almost entirely depends on its color. Because Amethyst is readily available in large sizes, the price per carat does not rise a considerable amount as the size/weight increases, making Amethyst a gemstone that provides excellent value for money. Gemstone: Rose De France Amethyst Birthstone Month: Amethyst is the birthstone for the month of February. Zodiac: Amethyst is associated with the zodiac sign of Pisces. Chemical Symbol: SiO2 Chemical Make-up: Amethyst is made a macrocrystalline variety of the crystal Quartz. ;History and Lore The name Amethyst is derived from the Greek word améthystos () which translates as “not drunken”. This word in turn is believed to originate in the Greek legend of Dionysus, the God of wine and mischief, who was angered by an insult from a mere mortal. As a result of this insult, he swore revenge against the next mortal who crossed his path. The next unfortunate mortal to cross the path of Dionysus was a beautiful young lady named Amethyst who was on her way to pay tribute to the Goddess Artemis. The Goddess Artemis saw Amethyst's plight, and seeing that she was in danger, Artemis transformed Amethyst into a pure, clear crsytalline quartz statue in order to protect her. Upon seeing the beautiful clear quartz statue Dionysis regretted his actions and wept tears of wine over it in remorse. This wine, in the form of tears from a God, stained the clear quartz purple creating the gemstone we know today as Amethyst. Throughout history Amethyst has been thought to protect against intoxication and to help maintain a sober and serious mind, which is perhaps, along with its purple coloration, why Amethyst has a long association with royalty. Amethyst is in fact featured in jewels worn by Catherine the Great, Egyptian royalty and in the British Crown Jewels. Amethyst opens and activates the crown chakra, the third eye chakra, and can also open the heart chakra. Amethyst can be used to fight a number of disorders including headaches, insomnia, hearing disorders, heart disorders, digestive system disorders, and has even been thought to help stabilize mental disorders. Amethyst also works emotionally and spiritually by providing patience, balance, calmness, and peace. ;Availability Amethyst is a very widely available gemstone which is found in a variety of shapes and sizes, as well as a variety of shades of purple. ;Sources Though today's major sources of Amethyst are Bolivia, Brazil, Uruguay, and Zambia, there are also known deposits of Amethyst in Argentina, Australia, Germany, India, Iran, Madagascar, Mexico, Namibia, Russia, Sri Lanka, Tanzania, and the United States (Maine, North Carolina, Pennsylvania, Texas). ;Evaluation Amethyst is rated at 7 on the Moh's Scale of Hardness. Because of its relative hardness and having no particular warnings for care, Amethyst can be used for all jewelry purposes. Amethyst is found in a variety of hues of purple including deep purple, light lilac, lavender and mauve. The pale lilac colors, coined Rose De France, were once considered undesirable but have recently become a popular fashion favorite due to intensive and clever marketing. Regardless of this popularity, the deep, rich purple colors are still the most sought-after. The value of Amethyst almost entirely depends on its color. Because Amethyst is readily available in large sizes, the price per carat does not rise a considerable amount as the size / weight increases, making Amethyst a gemstone that provides excellent value for money. ;Common Cuts Large, fine quality Amethyst stones are often sold in free sizes, but smaller specimens are cut into all of the commonly recognized shapes/cuts. Lower quality Amethyst specimens are usually carved into ornamental objects or beads, or heat-treated to produce Citrine. ;Routine Enhancements Rose De France Amethyst is occasionally heat-treated to lighten its color and/or remove any smoky components within the stone. ;Care and Cleaning As with all gemstones, the number one rule of thumb with Amethyst is to try to keep it clean. When cleaning is needed use warm soapy water, and a soft brush. Ultrasonic cleaners are also usually safe. A steamer can be used to clean Amethyst but it can be risky so should be used with caution, and is really a cleaning method that should be carried out only by experienced jewelers. Never use the chemicals hydrofluoric acid or ammonium fluoride to clean Amethyst because it can erode the stone. With Amethyst gemstones and jewelry you should avoid prolonged exposure to extreme heat as prolonged exposure can cause color change. Amethyst jewelry should be kept in a fabric-lined box away from other, jewelry items so as to avoid damage/scratching. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Rose de france」の詳細全文を読む スポンサード リンク
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