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  1. GIA Diamond Grading Scales: The Universal Measure of Quality

    Mar 14, 2013 · 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 …

  2. 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.

  3. GIA Diamond Grading

    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 …

  4. 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 …

  5. Colored Diamonds: Diamond Grading & Reports | GIA 4Cs

    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 …

  6. Understanding the 4Cs of Diamond Quality | Diamond Factors

    GIA’s diamond grading provides the consistent and unbiased results that the global diamond industry and diamond customers trust. Without strict standards, the characteristics, quality and …

  7. Home | GIA 4Cs

    For nearly 100 years, GIA has helped advance the global diamond industry through innovation and education. A GIA Diamond Grading Report is more than the standard in diamond …

  8. Analysis & Grading - GIA.edu

    D-to-Z diamonds, offering details such as estimated total carat weight, color and clarity ranges. Each report includes metal testing, item weight, markings, and a photo of the jewelry.

  9. How GIA Grades Diamonds

    Learn about GIA's processes to ensure the most accurate and ethical diamond grading results.

  10. 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.