編號 100210509

沒有保留價 - 1 pcs 鑽石 (天然) - 0.31 ct - 圓形 - K(輕微黃色、從正面看是亮白的) - I1 - 國際寶石學院(International Gemological Institute (IGI))
編號 100210509

沒有保留價 - 1 pcs 鑽石 (天然) - 0.31 ct - 圓形 - K(輕微黃色、從正面看是亮白的) - I1 - 國際寶石學院(International Gemological Institute (IGI))
International Gemological Institute (IGI) Diamond Report again.
To provide a fresh perspective, here is a breakdown of the document's structure and the information provided, focusing on the "4 Cs" of diamond grading:
Certificate Structure and Details
• Header: Identifies the issuing body as the INTERNATIONAL GEMOLOGICAL INSTITUTE (IGI).
• Report Section: Lists administrative details:
• Date: November 16, 2025
• IGI Report Number: 743562079
• Description: NATURAL DIAMOND
• Shape and Cutting Style: ROUND BRILLIANT
• Measurements: \bm{4.20 - 4.27 \times 2.67 \text{ mm}}
The 4 Cs (Grading Results)
This section details the primary quality attributes of the diamond:
1. Carat Weight (Weight): 0.31 CARAT
2. Color Grade (Color): K, FAINT GRAY (Indicates a noticeable faint yellow/gray tint)
3. Clarity Grade (Clarity): I1 (Indicates inclusions are visible to the naked eye)
4. Cut Grade (Cut): VERY GOOD (A high grade indicating good light performance and proportioning)
Additional Grading Information
This section provides secondary grades that affect the stone's finish and appearance:
• Polish: GOOD
• Symmetry: VERY GOOD
• Fluorescence: NONE (No reaction to UV light)
• Identification Features: CRYSTAL (The primary inclusion type)
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