What is AAA Quality? by Emylee Unlike Diamonds, there is no accepted grading system for colored gemstones. But Gemvara has very high standards for its gemstones, which are all hand selected for their beauty. Our AAA quality gemstones are very well cut, with lively brilliance and very good polish. Gemvara selects premium medium-toned gems in each variety so that they complement each other in styles with multiple gems. Most gemstones we sell are eye-clean, which means there are no visible inclusions. An exception is Emerald, which due to its nature is very rare without some inclusions, called its "jardin." In pieces with multiple gemstones, we take extra care to make sure all the stones in the piece are well-matched. Some gem varieties have less-intense colors in smaller sizes, including Aquamarine, Morganite, Tanzanite, Rhodolite, and Yellow Sapphire. Gemvara only offers color enhanced gemstones that have been treated in trade-accepted ways to maximize their beauty. Amethyst, Aquamarine, Blue Sapphire, Citrine, Ruby, Tanzanite, and Yellow Sapphire have been enhanced by heat. Black Diamond and Blue Topaz have been enhanced by irradiation. Emerald's fissures are filled with oil or resin to reduce their visibility. For more information about gemstone enhancement, consult the American Gem Trade Association's gem enhancement guide.