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1. 4cs.gia.edu › en-us › blogGIA Diamond Grading Scales: The Universal Measure of Quality

   4cs.gia.edu › en-us › blog

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   Mar 14, 2013 · 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. The 4Cs means two very important things: diamond quality can be communicated in a universal language, and diamond-buying consumers can know exactly what they are about to purchase.

2. www.gia.edu › gem-lab-service › diamond-gradingNatural Diamond Grading Reports & Services

   www.gia.edu › gem-lab-service › diamond-grading

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   Diamond Origin Report. Full 4Cs assessment with a plotted clarity diagram, geographic origin and GIA report number laser inscription. For loose, natural D-to-Z color diamonds only, weighing 0.15 carats or more that were submitted for rough analysis. Learn More.

3. www.gia.edu › JP › homeGemological Institute Of America | 宝石のすべて - GIA

   www.gia.edu › JP › home

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   ダイヤモンドの起源レポートについて学ぶ. 詳しく見る. GIAは、研究、教育、ラボサービスを通して宝石とジュエリーを購入する一般を保護する目的で1931年に設立された独立非営利組織です。.

4. www.gia.edu › CN美国宝石研究院 | 宝石大全 - GIA

   www.gia.edu › CN

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   gia 成立于 1931 年，是一家独立的非盈利机构，通过研究、教育和鉴定所服务来保护购买宝石和珠宝的大众。 宝石百科全书 生日石

5. 4cs.gia.edu › en-us › how-gia-grades-diamondsAbout GIA Diamond Grading | 4Cs of Diamond Quality by GIA

   4cs.gia.edu › en-us › how-gia-grades-diamonds

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   The GIA Diamond Dossier® is a more concise, compact version of the GIA Diamond Grading Report and is available for diamonds that weigh between 0.15 and 1.99 carats. This report includes all the important 4Cs grading results as the Diamond Grading Report, but does not include the plotted diagram. GIA also offers online-only reports with full ...

6. www.gia.edu › gem-education › course-diamondDiamonds & Diamond Grading - All About Gemstones - GIA

   www.gia.edu › gem-education › course-diamond

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   The Diamond and Diamond Grading eLearning course brings to life the skills needed to grade the color, clarity and cut of diamonds through video, graphics, images and text. Key topics include: The influence of color, clarity, cut and carat on diamond value. Determining proportions and estimating weight.

7. www.gia.edu › JPGemological Institute Of America | 宝石のすべて - GIA

   www.gia.edu › JP

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   ダイヤモンドの起源レポートについて学ぶ. 詳しく見る. GIAは、研究、教育、ラボサービスを通して宝石とジュエリーを購入する一般を保護する目的で1931年に設立された独立非営利組織です。.