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

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

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   Diamond Grading Report. Full 4Cs assessment with a plotted clarity diagram. For loose, natural D-to-Z color diamonds only, weighing 0.15 carats or more. View Sample Report.

   • Submission Guidelines

     The GIA Diamond Focus Report is a cost-effective ...

   • 简体中文

     钻石原产地报告 提供完整的 4C 评估、净度特征标绘图、原产 ...

   • 日本語

     ダイヤモンド起源レポート クラリティに関するプロット図、 ...

   • UK

     Diamond Origin Report Full 4Cs assessment with a ...

   • Do You Grade Filled Diamonds

     GIA does not grade filled diamonds. Since filling a ...

   • Is There a Cut Grading System for Fancy Shaped Diamonds

     An internationally accepted system for visually ...

   • View Sample Report

     The diamond image is captured during the grading ...

   • Compare Reports

     View a detailed chart comparing the features of the ...

2. 4cs.gia.edu › en-us › blogGIA Diamond Grading Scales: The Universal Measure of Quality

   4cs.gia.edu › en-us › blog

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   2013年3月14日 · 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.

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     How to Choose a Diamond: Four-Minute GIA Diamond Grading Guide by GIA

     2014年7月21日

     觀看次數：127.7萬

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     Why a GIA Diamond Grading Report Is a Must-Have

     2024年5月1日

     觀看次數：2.7萬

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     How to Choose a Diamond: 10-Minute GIA Diamond Grading Guide by GIA

     2014年7月21日

     觀看次數：30.5萬

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4. hongkong.gia.edu › ZH-HK › gem-lab-service天然鑽石報告與服務

   hongkong.gia.edu › ZH-HK › gem-lab-service

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   鑽石鑑定精簡版報告(Diamond Dossier ®) 全面的4C評估，包括GIA報告編號鐳射刻字。僅適用於顏色等級為D-Z、重量為0.15-1.99克拉的未鑲嵌天然鑽石。 檢視報告範本

5. www.gia.edu › gem-labAnalysis & Grading - GIA.edu

   www.gia.edu › gem-lab

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   2024年1月25日 · 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.

6. 4cs.gia.edu › en-us › diamond-grading-reportGIA Diamond Grading Reports | 4Cs of Diamond Quality by GIA

   4cs.gia.edu › en-us › diamond-grading-report

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   • Gia Diamond Grading Report
   • New! Gia Diamond Origin Report
   • Gia Diamond Dossier®

   The GIA Diamond Grading Report includes an assessment of a diamond’s 4Cs – color, clarity, cut, and carat weight– along with a plotted diagram of its clarity characteristics and a graphic representation of the diamond’s proportions. For standard round brilliant cut diamonds falling in the D-to-Z color range, the report also includes a GIA Cut grade...

   在「4cs.gia.edu」查看更多資訊

   The new GIA Diamond Origin Report contains all the unbiased, accurate data of a Diamond Grading Report, plus GIA’s scientific determination of the diamond’s country of origin and a microscopic laser inscription of the report number on the diamond’s girdle. Image-rich, interactive materials accompany the report, telling the story of the diamond’s ho...

   在「4cs.gia.edu」查看更多資訊

   The GIA Diamond Dossier offers the same grading information as the GIA Diamond Grading Report but without the plotted diagram. As an added security feature, the Dossier service includes a microscopic laser inscription of the report number on the diamond’s girdle. The GIA laboratory issues the Diamond Dossier for loose, natural diamonds between 0.15...

   在「4cs.gia.edu」查看更多資訊

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8. hongkong.gia.edu › ZH-HK › graduate-diamonds鑽石文憑課程 - Gemological Institute of America

   hongkong.gia.edu › ZH-HK › graduate-diamonds

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   介紹GIA 國際鑽石分級系統 (GIA International Diamond Grading System™) 偵測經過處理及實驗室培育的鑽石. 認識品質、稀有性、顏色和市場因素如何影響寶石價值. 可發展的事業路向. 鑽石買家. 鑽石分級員/評級員. 古董珠寶經銷商. 珠寶企業東主. 專業珠寶銷售人員. 零售商. 拍賣行珠寶專家. 批發商. 立即申請. 您可能還會喜歡. 尋找零售商. 了解更多. 教育目錄. 下載. 2024 年課程時間表. 了解更多. 行業分析. 了解更多. GIA 創立了鑽石分級的科學方法，制定了 4C 標準和國際鑽石分級系統 (International Diamond Grading System™)，該等標準為全球珠寶專業人士所廣泛使用。

9. hongkong.gia.edu › ZH-HK › why-gia-grading為什麼要選擇在GIA進行寶石分級和分析？

   hongkong.gia.edu › ZH-HK › why-gia-grading

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   標準- GIA制訂並維持評估鑽石、有色寶石和珍珠的方法與最佳實踐。作為4C標準和GIA國際鑽石分級系統(International Diamond Grading System )的創立者，我們建立了共同語言以描述D到Z色鑽石的品質。

10. 其他人也問了

    What is a GIA diamond grading report?

    • The GIA laboratory issues diamond grading reports for loose, natural diamonds in the D-to-Z color range that weigh 0.15 carats or more. GIA Diamond Grading Reports are not issued for laboratory-grown diamonds, diamond simulants, mounted diamonds or those that have undergone unstable treatments, such as fracture filling or coating.

    GIA Diamond Grading Reports | 4Cs of Diamond Quality by GIA

    4cs.gia.edu/en-us/diamond-grading-report/

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    Is GIA grading diamond color more strict than AGS?

    • Not only that, but you'll run across claims that one lab grades color or clarity more strictly than the other. I've heard that theGIA is stricter on grading diamond color. At the same time, the AGS is supposedly more stringent on diamond clarity.

    Diamond Color Grading 2021 | Perception of Hue & Saturation

    niceice.com/diamond-color-grading/

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    How does Gia evaluate diamonds?

    • Assessment of color origin and quality based on GIA’s color grading system for diamonds outside the D-to-Z range. Identification of laboratory-grown diamonds, ensuring disclosure through laser inscription and digital-only reports. Confirmation of a gemstone’s identity and characteristics through a full gemological examination.

    Analysis & Grading - GIA.edu

    www.gia.edu/gem-lab

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    What is the GIA grading system?

    • Founded in 1931, the GIA is the world’s leading authority on colored stone, diamonds and pearls. Widely respected across every continent the GIA were the first institute to create the 4 C’s and along with it the International Diamond Grading System™ – A standard which is still used today, nearly 80 years after its initial release.

    What does GIA, AGS and EGL actually mean?

    yourdiamondguru.com/diamond-certification/

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