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GIA Diamond Grading Scales: The Universal Measure of Quality - GIA 4Cs
The prospect of purchasing a diamond may seem daunting, but through GIA, an unbiased authority on diamonds, you have several handy resources to help you select the highest quality diamond. First up, an overview of the 4Cs: Color, Clarity, Cut, and Carat Weight.
GIA Diamond Grading & Reports | GIA 4Cs
GIA offers the world's most rigorous assessment of the 4Cs and grades every diamond with the same care, expertise and strict guidelines.
Diamond Rating & Grading Charts | Diamond Classification
This diamond rating chart can help you choose the right gem. Learn the color and clarity criteria by which diamonds are graded for valuation purposes.
Diamond 4Cs Guide: Carat, Color, Clarity, & Cut Charts| IGI
Learn the Diamond 4Cs with color, clarity, cut, and carat charts. Explore diamond ratings, grading scales, and consumer diamond education from IGI.
Diamond Grading Scale - Diamond Registry
A diamond grading report provides information about a diamond’s quality based on the 4Cs: cut, color, clarity, and carat weight. This report is typically created by a gemologist or a trusted laboratory like GIA.
Diamond Quality Factors
Diamond professionals use the grading system developed by GIA in the 1950s, which established the use of four important factors to describe and classify diamonds: Clarity, Color, Cut, and Carat Weight. Diamonds can be fashioned into a variety of shapes and still be beautiful. These are known as the 4Cs.
Diamonds & Diamond Grading
In this online course, you'll get an in-depth understanding of diamonds, including how to grade their color, clarity, and cut.
Diamond Grading - Gemology Online
Useful Links Diamond Grading: The 4 C's The 4 C's, when referring to diamond value, are color, clarity, carat weight and cut. All four factors are equally important in determining the final cost of a diamond. The criteria for diamond grading, most respected internationally, was developed by the Gemological Institute of America (the G.I.A.). The terminology and systems described on this page ...
Diamond grading explained: your guide to quality and value
Understand diamond grading with this clear guide to the 4Cs, certifications, and smart buying strategies for engagement rings and fine jewelry.
Diamond Certification, Gemstone Certification & Grading Reports| IGI
Explore IGI diamond and gemstone certification, grading reports, and consumer education resources. Learn how certification helps determine diamond value.
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