Amethyst’s purple color can range from a light lilac to a deep, intense royal purple, and from brownish to vivid. Amethyst is the purple variety of the quartz mineral species It’s the gem that’s most commonly associated with the color purple, even though there are other purple gems such as sapphire and tanzanite. The romans called him bacchus It is the purple variety of the mineral quartz It was as valuable as ruby and emerald until the 1800s when more amethyst was found in the country of brazil
It is the most valuable quartz gem Today, many kinds of jewelry are made from amethyst Quartz can come in many other colors. Amethyst from boudi, morocco fabrizio troilo, abdelghani el harfi, salahaddine mouaddib, erica bittarello, and emanuele costa , 四月 30, 2015 阅读详细内容（英语） Russia was the major source of amethyst until the 19th century, when large deposits were found in brazil Once as rare as ruby or emerald, amethyst was suddenly in abundance
Amethyst from boudi, morocco fabrizio troilo, abdelghani el harfi, salahaddine mouaddib, erica bittarello, and emanuele costa , 4 30, 2015 英語で詳細を読む Amethyst, the purple variety of quartz colored by interstitial fe3+ (cohen, 1985), forms in a number of geological settings, but always at relatively low temperature (≤400°c) and shallow crustal depth (cohen, 1985
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