GIA Gemological Institute of America - GIA Graded Diamonds
Gemological Institute of America
GIA developed the first internationally accepted Diamond Grading System. This system provides unbiased opinions on the quality of polished diamonds by applying uniform criteria to their grading. The GIA also introduced the first diamond grading report that utilizes this system in setting the standard for diamond quality documentation around the world.
To maintain its position as an unbiased arbiter of standards in diamond grading and gem identification, the GIA refrains from any involvement in the buying, selling or appraising gems and jewellery. Throughout its 67-year history, the Institute has maintained a strict ethics policy and holds itself to this code which has protected and enhanced its reputation throughout the decades. In effect, the GIA cannot and does not compete with the gem and jewellery trade.
The GIA set the standard for diamond grading and gemological identification, and their grading system serves as the international gem and jewellery industry's benchmark credentials. A GIA Diamond Grading Report details the following:Shape & Cutting Style, measurements, carat weight, proportions, polish grade, symmetry grade, clarity grade, clarity plot, colour grade,
fluorescence & comments.
A Diamond Dossier®, issued by the Gemological Institute of America (GIA), is a special report issued for diamonds weighing less than 1 carat. This dossier describes the following:
Laser Inscription Registry – Each diamond with a GIA Diamond Dossier is laser inscribed with the report number, shape & cutting style, measurements, carat weight, proportions, polish grade, symmetry grade, clarity grade, colour grade, fluorescence & comments.
Diamond Certificates & Certification
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GIA Graded Diamonds