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Girdle % thin or thick

Discussion in 'RockyTalky' started by larry, Mar 8, 2002.

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  1. larry
    Rough_Rock

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    by larry » Mar 8, 2002
    I am looking at a diamond with a girdle of 1.5-2.7 can anyone tell what it coresponds to in thickness? Is this diamond woth considering?

    Thanks
     
  2. lawmax
    Brilliant_Rock

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    by lawmax » Mar 8, 2002
    I'm guessing medium to thick or more. Hopefully, someone more knowledgable will come along or I'll find the answer for you.

    :)
     
  3. pricescope
    Ideal_Rock

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    by pricescope » Mar 8, 2002
    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%
     
  4. lawmax
    Brilliant_Rock

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    by lawmax » Mar 8, 2002
    Good charts Leonid!

    So Larry-the girdle on that one seems cool. What about the rest of the diamond?
     
  5. larry
    Rough_Rock

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    by larry » Mar 9, 2002
    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?
     
  6. pricescope
    Ideal_Rock

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    by pricescope » Mar 9, 2002
    ----------------
    On 3/9/2002 2:24:13 PM

    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?
    ----------------



    [/u]
     
  7. moediamond
    Rough_Rock

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    by moediamond » Mar 10, 2002
    Feel free to visit the following websites for exquisite looking Platinum rings:

    www.stuller.com
    www.overnightmountings.com

    They specialize in Platinum mountings.
    Some vendors here have accounts with them and could supply the ring for you.
    :rolleyes:
     
  8. pyramid
    Ideal_Rock

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    by pyramid » Mar 27, 2003
    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?
     
  9. Leon
    Rough_Rock

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    by Leon » Jun 26, 2003
    Is a thin Girdle a bad thing?
     
  10. Rhino
    Ideal_Rock
    Trade

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    by Rhino » Jun 26, 2003

    Leonid making plugs?
     
  11. Rhino
    Ideal_Rock
    Trade

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    by Rhino » Jun 26, 2003

    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
     
  12. Rhino
    Ideal_Rock
    Trade

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    by Rhino » Jun 26, 2003
    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
     
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