
Amethyst Gemstone | Amethyst Stone - GIA
Amethyst Gemstone is the purple variety of the Quartz mineral. Amethyst’s purple color can range from a light lilac to a deep, intense royal purple, and from brownish to vivid.
Amethyst Description - GIA
Amethyst is the purple variety of the quartz mineral species and the gem most commonly associated with the color purple.
Amethyst History and Lore - GIA
This ancient necklace dates to 2000BCE. An inscription on the center stone is a South Arabian script from the 8th century BCE. - From "Gems and Gemstones: Timeless Natural Beauty of the Mineral …
February Birthstone | Amethyst Birthstone Source & Meaning | GIA
If you were born in February, your birthstone is amethyst – the purple variety of quartz that has captivated mankind for millennia. Its lilac to deep purple hues can be cut into many shapes and …
Amethyst Quality Factors - GIA
This 17.53-carat amethyst displays a rich reddish purple color. - Lydia Dyer, Super Trillion Cut Amethyst gem courtesy of John Dyer & Co. Amethyst has been the most-prized quartz variety for centuries. …
アメシストの宝石 | アメシストストーン - GIA
ブラジルの大規模な鉱床が発見された19世紀まで、アメシストは、ルビーやエメラルドのように高価でした。 古代ギリシャ語「amethystos(アメシストス)」には「酔っていない」という意味があり …
紫水晶 | 紫水晶 - GIA
直到 19 世纪在巴西发现大型矿床,紫水晶曾经与红宝石和祖母绿一样昂贵。 有人认为它可以防止中毒—amethystos 在古希腊语中表示“不醉”之意。 如今,作为最有价值的石英类别,紫水晶备受设计师作 …
Amethyst Care and Cleaning Guide - GIA
Learn about amethyst's durability and how to care for your amethyst jewelry.
Amethyst from Newfoundland, Canada: Geology, Internal Features
May 8, 2017 · Characterizes gem-quality amethyst from the La Manche deposit in the Avalon Zone of Newfoundland, Canada.
Amethyst From Morocco: An Update | Gems & Gemology - GIA
Aug 3, 2015 · Figure 1. These Moroccan amethyst crystals, which weigh 2.87 and 6.24 grams, display an attractive purple zoning conforming to the rhombohedral faces. Photo by Nuttaphol Kitdee. Most …