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Hace 4 días · Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source of knowledge, standards, and education in gems and jewelry.
- English (Uk)
Established in 1931, the Gemological Institute of America...
- Aquamarine Description
Aquamarine is the green-blue to blue variety of the mineral...
- English (Uk)
Hace 2 días · We offer the finest gem and jewelry education in the world with curriculum developed from our groundbreaking research and delivered by the industry’s leading experts. GIA gives you the knowledge and practical skills to translate your love for gems and jewelry into a rewarding career.
Hace 4 días · Aquamarine is the green-blue to blue variety of the mineral beryl. (Emerald is the green to bluish green variety of the same mineral.) Its color is usually a light pastel greenish blue. This 20.83-carat stone from Africa represents the large size and attractive color that make aquamarine a much-prized gem. - De'ev Dvir/ICA, courtesy Gemstar Ltd ...
Hace 2 días · About. Diamond Color. The color evaluation of most gem-quality diamonds is based on the absence of color. A chemically pure and structurally perfect diamond has no hue, like a drop of pure water, and consequently, a higher value.
Hace 2 días · Diamond Clarity. Natural diamonds are the result of carbon exposed to tremendous heat and pressure deep in the earth. This process can result in a variety of internal characteristics called 'inclusions' and external characteristics called 'blemishes.'
Hace 1 día · Brightness. Internal and external white light reflected from a diamond. Fire. The scattering of white light into all the colors of the rainbow. Scintillation. The sparkle a diamond produces, and the pattern of light and dark areas caused by reflections within the diamond.
Hace 5 días · GIA is considered the world's most trusted name in diamond grading and gemstone identification. Since 1931, GIA has been dedicated to ensuring the public trust in gems and jewelry by upholding the highest standards of integrity, academics, science and professionalism. GIA created the famous 4Cs of diamond value – Color, Clarity, Cut and Carat ...
