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https://www.gemsociety.org/jewelry-lapidary/grading-gemstones-and-diamonds/
With the Hanneman diamond cut grading system, you can derive the cut grade of any round brilliant with minimal measurements and calculations.… Modern Diamond Cut Grading Methods The GIA modern diamond cut grading method is the most widely accepted in the industry. Our step-by-step guide covers the tools and techniques you’ll…
https://www.americangemsociety.org/buying-diamonds-with-confidence/ags-diamond-grading-system/
The AGS 0–10 Diamond Grading System The AGS 0–10 grading scale is easy to understand: the highest possible grade is zero, and the lowest is 10.
https://www.igi.org/assets/images/pdf/4cs_chart.pdf
THE GLOBAL AUTHORITY IN DIAMOND, GEMSTONE AND JEWELRY GRADING www.igi.org I 1975 N T E R N A T I O N A L O G E M O L G I C A L I N S T I T U T E. Title: IGI 4c's 2019 - …
https://4cs.gia.edu/en-us/blog/gia-diamond-grading-scales/
Mar 14, 2013 · GIA Diamond Grading Scales: The Universal Measure of Quality March 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 highest quality diamond.
https://4cs.gia.edu/en-us/4cs-diamond-quality/
Jul 28, 2021 · Today, the 4Cs of Diamond Quality is the universal method for assessing the quality of any diamond, anywhere in the world. The creation of the Diamond 4Cs meant two very important things: diamond quality could be communicated in a universal language, and diamond customers could now know exactly what they were about to purchase.
https://www.americangemsociety.org/ags-laboratories/jewelry-industry/jewelry-grading-report-details/
The AGS Laboratories’ newest grading service, the Jewelry Grading Report, offers a grading analysis of diamonds that are already set in jewelry. This opportunity allows consumers ranging from buyers of everyday wear jewelry to collectors of designer diamonds the access to AGSL grades supported by our ethical reputation and high standards.
https://www.withclarity.com/education/diamond-education/diamond-color
Diamond color is graded by evaluating the body color of the diamond on a pure white background, face down. Gemologists will compare the diamond to master stones, or a GIA-verified set of cubic zirconia, with grade color shading. If the diamond has more yellow than one but less than the other, it will receive a grade in that range.
https://www.jewelryexchange.com/gradingInfo-sp
Diamond grading is a very subjective skill that is performed by diamond experts that have years of experience in the industry. They thoroughly examine a diamond’s physical characteristics and render an expert opinion. Different experts have varying opinions on a grade.
https://www.jewelrynotes.com/how-to-grade-diamond/
The most important characteristics that are graded in a diamond are its color, clarity, and cut. Diamond carat weight is measured in carats and, like the above three attributes, is also an important determinant of diamond price.
https://www.costco.com/jewelry-buying-guide-diamonds.html
Jewelry Grading/Gemological Report. When you purchase an article of jewelry with a 1.00ct center diamond or larger, it will also include a Jewelry Grading/Gemological Report describing the jewelry piece. This report will not have a monetary value listed, however, you can contact the company that issued the report and request an insurance appraisal.
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