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.

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 …

The finest amethyst color is a strong reddish purple or purple with no visible color zoning. Dealers prefer strongly saturated reddish purple to dark purple, as long as the stone is not so dark that …

Amethyst’s purple color can range from a light lilac to a deep, intense royal purple, and from brownish to vivid. Amethyst also commonly shows what is called color zoning, which in the …

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 …

2015年4月30日 · Morocco produces deep purple amethyst with red hematite “finger” inclusions that can cause red flashes of color. Photo by Eric Welch/GIA, courtesy of Geostone Group. …

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 major sources …

2015年8月3日 · The best crystals exhibit purple flashes with a red tinge. Faceting this deeply colored material can reveal strong red overtones; these stones are known in the trade as …

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 …

Common substances like sand and dust are composed mostly of quartz, the mineral species that includes the purple variety amethyst. So, while amethyst is a great gemstone for use in …