Girdle % thin or thick
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Related topics
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- Thin to Thick Girdle... and diamond size
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Different labs use different systems for girdle:
If it is 1.5-2.7% in AGS certificate then it's slightly thing girdle. GIA Extremely thin 0.00 - 0.08 mm Very thin 0.08 - 0.12 mm Thin 0.12 - 0.15 mm Medium 0.15 - 0.20 mm Slightly thick 0.20 - 0.23 mm Thick 0.23 - 0.33 mm Very thick 0.33 - 0.40 mm Extremely Thick: greater than 0.40 millimeters AGS Very thin 0.091 - 0.50% Thin 0.51 - 1.2% Medium 1.21 - 1.7% Slightly thick 1.71 - 2.95% Thick 2.96 - 4.2% Very thick 4.21 - 5.7% Extremely Thick: >= 5.71 % HRD Ex.Thin 0.0 - 0.5% Very Thin 0.5 - 1.5% Thin 1.5 - 2.5% Medium 2.5 - 4.5% Sl.Thick 4.5 - 6.0% Thick 6.0 - 7.5% Very Thick 7.5 - 8.0% Ex. Thick 8.0 - 100% |
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Shape A Cut Above H&A
Carat 0.400 Color E Clarity SI1 Measurements (mm) 4.67-4.70X2.92 Table % 55 Depth % 62.3 Crown Angle ° 34.3 Crown % 15.3 Pavilion Angle ° 40.8 Pavilion % 42.9 Polish Ideal Symmetry Ideal Girdle 1.5-2.7 Culet Pointed Fluorescence Inert It came out 0.8 on the cut advisor. I am considering a platinum or white gold six prong tiffany or a 3 diamond version with two smaller diamonds on either side any suggestions? Can anyone recommend a good place to find rings? Any estimate on how much to pay for this diamond? |
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Larry, Whiteflash is a good place to get a ring as well: http://www.whiteflash.com/wf/wardrobe/rings.asp?category_name=Rings |
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Found this chart here posted by Leonid. Why do the labs not agree on very thin, thin, medium etc. Is very thin seen as a bad thing by GIA or is it okay as they are allowing a higher millimetre measurement for very thin? Whereas very thin would not get an AGS 0 from their percentage measurement. Ofcourse I know GIA does not rate cut but do you know what their views are on very thin is it a negative when buying a diamond in GIA's opinion?
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Leonid making plugs? |
4:36 PM leonid wrote: |
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No. Most ideal cut diamonds have girdles ranging anywhere from thin up to slightly thick. In terms of percentages it should not fall below .51% of the diameter or above 2.95% of the diameter. If you peruse browse Sarin/OGI analysis or AGS Reports you'll see girdle thickness listed in %'s. On a GIA Report they use the descriptive terms of thin, medium, etc. Peace, Rhino |
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Great charts Leonid. Looking at the stark contrast between HRD & AGS standards it makes me wonder if they are measuring the girdle thickness at the same places on the girdle. For the curious ... AGS measures the girdle thickness in a place called the "valleys'. There are actually 3 places around the girdle where measurements are taken. For more detailed info check out this link in our tutorial... http://www.goodoldgold.com/the_girdle.htm
Peace, Rhino |