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. 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.
Amethyst - Gemological Institute of America
Amethyst is a gem with purple coloring that many people find very beautiful. 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.
Amethyst History and Lore - GIA
Explore amethyst history, research, quality factors, and more in the GIA Gem Encyclopedia.
Amethyst Quality Factors - GIA
This makes amethyst one of the world’s most popular colored gems and the most commercially important gem-quality quartz variety. Color The finest amethyst color is a strong reddish purple or purple with no visible color zoning.
GIA Gem Encyclopedia | Complete List Of Gemstones
GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s guide, photos, videos & research.
February Birthstone | Amethyst Birthstone Source & Meaning - GIA
Amethyst, the February birthstone, is the purple variety of quartz. It is said to prevent drunkenness and make you quick witted in business. You once had to be rich to own this birthstone for February, but new finds have made it more affordable.
Amethyst Care and Cleaning Guide - GIA
So, while amethyst is a great gemstone for use in jewelry, it should be treated with the proper care to prevent scratching and other damage. Amethyst rates a 7 on the Mohs scale and has good toughness, so it is suitable for all jewelry types.
Maricopa County, Arizona, has produced gem-quality amethyst from crystal-lined or crystal-filled cavities and fractures in a brecciated quartzite host rock. Crystals from the deposit exhibit a range of purple colors, uneven color zoning, and variable transparency, which present challenges for obtain-ing a steady supply of material suitable for ...
Gem-quality amethyst at the La Manche deposit in the Avalon Zone of Newfoundland, Canada, occurs in a calcite- galena-barite-quartz vein adjacent to a historical lead mine containing similar mineralization.