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Hace 17 horas · 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...
- English (Uk)
Hace 1 día · 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 3 días · Ruby is one variety of the corundum mineral species, which also includes sapphire. Ruby is highly regarded and can command high per-carat prices. It is arguably one of the most important gems in the colored stone market. In its purest form, the mineral corundum is colorless. Trace elements that become part of the mineral’s crystal structure ...
Hace 17 horas · Gemological Institute of America (GIA) scientists found cloud inclusions to be the cause of the greyish-blue color of a diamond that was recently submitted to its New York laboratory for colored-diamond grading. When examining the 2.20-carat diamond, staff ruled out the major sources of blue color in diamonds. The most common is the presence of ...
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 17 horas · Gemological Institute of America (GIA): GIA, a non-profit organization, is one of the most respected authorities in diamond grading and certification. They also offer grading reports for lab-grown diamonds, adhering to the same standards applied to natural diamonds.
Hace 3 días · Gemological Institute of America (GIA) is the leading gemological laboratory in the world, it is the industry’s most trusted services. THE 4C'S The GIA Diamond Grading Report includes an assessment of a diamond’s 4Cs – colour, clarity, cut, and carat weight – along with a plotted diagram of its clarity characteristics and a ...
