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The Gemological Institute of America (GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [ 1 ] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality.
In 1953, Liddicoat introduced the GIA diamond grading system - a practical approach to grading the quality of colorless to light yellow polished diamonds on the basis of color, clarity, and cut. A central feature was the D-to-Z color grading system for faceted colorless to light yellow diamonds—the vast majority of diamonds seen in the trade.
Diamond certified FL (flawless) by the GIA Two diamonds of grade VS 1 and SI 2 respectively. The GIA diamond grading scale is divided into six categories and eleven grades. [2] The clarity categories and grades are: [3] Flawless category (FL) diamonds have no inclusions or blemishes visible under 10× magnification. [3]
The GIA began grading cut on every grading report for round brilliant beginning in 2006 [26] based on their comprehensive study of 20,000 proportions with 70,000 observations of 2,000 diamonds. [citation needed] The single descriptive words are as follows: Excellent, Very Good, Good, Fair, and Poor. [25]
IGI has the only international certification lab controlled by one central governing body that adheres to one internationally accepted system for diamond grading. [ citation needed ] IGI is International Organization for Standardization (ISO) 9001: 2000 certified in four countries, including the United States, Canada, India and the United Arab ...
We’re always looking for ways to make your time in the kitchen easier and quicker—including during the holidays. Turns out, we’re not the only ones. Ina Garten spilled the beans—or at ...
Bill Belichick’s girlfriend is showing up for her man!. During the Dec. 12 event introducing him as a member of Tar Heel nation as the new head football coach of UNC-Chapel Hill, Belichick’s ...
Some troops leave the battlefield injured. Others return from war with mental wounds. Yet many of the 2 million Iraq and Afghanistan veterans suffer from a condition the Defense Department refuses to acknowledge: Moral injury.