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Video: How To Read a GIA Grading Report

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How To Read a GIA Grading Report

Length: 3:22 Added: May-10 Views: 73

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[MUSIC PLAYING] A public benefit independent institute established in 1931, GIA is the leading source of knowledge, standards, and education in gems and jewelry. As the creator of the four C's and the International Diamond Grading System, GIA maintains the methods and best practices for evaluating and describing diamond quality. Today, virtually everyone in the International Diamond Industry uses these methods for evaluating and comparing diamonds. A grading report from CIA is more than a collection of observations about a gem. It represents an accurate unbiased comprehensive scientific investigation. Now, let's review the main components of a GIA grading report. Each diamond is assigned a unique report number, which you can use to look up your report online. The weight of a diamond is measured in carat's GIA reports diamond carat weight to the nearest hundredth of a carat. The GIA color grading system describes the diamonds lack of color ranging from d, which is colorless to z, which is light yellow or brown. Diamond clarity evaluates the number, size, relief, nature, and position of internal inclusions and surface blemishes. GIA assigns one of 11 clarity grades ranging from flawless to included and lists the most prominent clarity characteristics. On some report formats, clarity characteristics are shown as a plotted diagram marking significant or identifying characteristics. A key lists the relevant symbols and their definitions. For the standard round brilliant diamond, GIA assigns a cut grade ranging from excellent to poor taking into account seven components, polish, cemetery, weight ratio, durability, brightness, fire, and scintillation. The diamond's dimensions are thoroughly described from its shape and cutting style to its precise measurements. A diagram shows the diamond's profile and its proportions. A description of fluorescence is provided as an additional identifying characteristic. GIA tests every diamond to verify that it is natural and to identify any processes that may have been used to alter its color or clarity. An asterisk next to the color or clarity grade indicates the diamond has been treated. Treatments and additional identifying characteristics are described in the comment section. If the diamond is inscribed, the inscription will be noted on the report as well. A GIA grading report has a number of sophisticated security features designed to ensure its authenticity and integrity. GIA offers a variety of diamond reports, among them the diamond eReport, an interactive online option available only for natural untreated diamonds. GIA operates under strict standard procedures and principles designed to ensure objectivity and accuracy no matter which report you receive. To learn more, visit and be sure to ask your jeweler for a GIA graded diamond. [MUSIC PLAYING]