American Gemological laboratory
A: We grade only loose diamonds because a mounting or setting can obscure or influence the color, cut, and clarity grade and make it difficult to determine an exact carat weight. Grading loose stones also allows AGL to detect any treatments applied to the diamond without damaging the stone or the mount.
A: A AGL report contains a full scientific and unbiased assessment of your diamond’s 4Cs. AGL tests every diamond submitted to establish its authenticity as a diamond and whether it’s been subjected to treatments. AGL reports provide a full description of the diamond, including color, weight, measurements, and cutting style, and disclose any known treatments.
A: D-to-Z color grading system is based on the relative absence of color. AGL’s colored diamond color grading is based on the presence of color. AGL describes color in terms of hue (the color), tone (relative lightness or darkness), and saturation (intensity). Hue (like pink) is modified by a “Fancy-grade” term (Fancy Light, Fancy, Fancy Intense, Fancy Deep, Fancy Vivid or Fancy Dark) which describes the effect of both tone and saturation.
A: An internationally accepted system for visually evaluating the appearance of fancy-cut diamonds does not exist at this time.
A: To convert your current AGL report to a different report type, submit the diamond along with its original AGL report and note that you would like Report Conversion service on your Service Order Request, specifying the new report type you would like. The diamond will go through the grading process and a new report will be issued.
A: Not at this time.
A: You can take your stone we reported before to our laboratory near you ,we can offer you a duplicate reports.
A: You can send your diamond to AGL for grading and analysis. Many consumers send the diamond through a retailer for packaging, shipping and insuring the item.
A: All AGL reports contain security features such as anti-fake tags, qr-code and NFC technology that prevent them from being forged or duplicated. Also, AGL’s Report Check service can verify whether the information on the report matches what’s contained in our database.
A: Not grade,but AGL Gemological Identification Reports assess the characteristics of an colored stone (weight, measurements, shape, cutting style and color), determine natural or synthetic, indicate detectable treatments, and can issue an opinion on geographic origin, when possible.
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