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14 Μαρ 2013 · First up, an overview of the 4Cs: Color, Clarity, Cut, and Carat Weight. GIA created the 4Cs (Color, Clarity, Cut and Carat Weight) as a universal method for establishing the quality of any diamond, anywhere in the world.
- GIA Grading
The GIA Diamond Grading Report. This report uses the...
- Clarity
The GIA International Diamond Grading System ™. The GIA...
- Analysis & Grading
GIA is the world’s most trusted name in diamond grading and...
- How GIA Grades Diamonds
With thousands of diamonds, and hundreds of diamond graders,...
- Diamond Cut
The GIA Cut Grading System applies to the most popular...
- GIA Grading
GIA Diamond Grading Reports are also used by appraisers to determine a diamond’s value if you want to insure your diamond engagement ring. At GIA, we know diamonds. We created the 4Cs of diamond quality and the GIA International Diamond Grading System™ used worldwide for grading diamonds. Top museums and auction houses trust us to evaluate ...
GIA is the world’s most trusted name in diamond grading and gem identification. With objectivity and expertise as its hallmarks, GIA ensures the integrity and accuracy of every report it issues. GIA tests every material submitted to determine whether it is natural or not, and discloses any treatments discovered during our examination.
The GIA Diamond Grading Report. This report uses the universally accepted GIA standards to determine a natural diamond’s shape, color, clarity, cut and carat weight – as well as proportions, finish and treatments. It also includes a plotted diagram which maps your diamond, identifying its unique characteristics. The GIA Diamond Origin Report.
With thousands of diamonds, and hundreds of diamond graders, the routing and tracking of the GIA laboratory’s inventory requires a highly trained and alert staff, combined with the best support technology can offer. Learn about GIA's processes to ensure the most accurate and ethical diamond grading results.
In the 1940s and ’50s, GIA developed the 4Cs and the International Diamond Grading System™ to objectively compare and evaluate diamonds. The 4Cs of diamond quality will give you a wealth of information about a diamond’s characteristics and value, but they can’t describe one elusive quality – beauty.
14 Ιαν 2016 · The GIA Cut Grading System applies to the most popular cutting style – the standard round brilliant – and all clarities across the D-to-Z color range. There are five cut grades: Excellent (EX), Very Good (VG), Good (G), Fair (F) and Poor (P). A diamond with an Excellent cut grade is very bright.
