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Girdle thickness

Discussion in 'RockyTalky' started by virginia1, Apr 2, 2002.

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  1. virginia1
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    by virginia1 » Apr 2, 2002
    Should I be concerned about the girdle thickness of this diamond? How thin is thin enough to worry about chipping?

    I am trying to decide between this an a great 1.18 that I found--that is about $400 more, AGS-O. (This is GIA certified). Will the difference in diameter (6.66 v. 6.84) be noticeable? I'm going to try to go to a local store and see if I can find similarly sized stones to do size comparisons.

    Thanks again--you all have been an incredible help!

    LD00633368[1].jpg
     
    


    


  2. Garry H (Cut Nut)
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  3. virginia1
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    by virginia1 » Apr 3, 2002
    Likely in just a classic 4-prong platinum tiffany setting--after all of the shopping that is the one she liked the best.
     
  4. Garry H (Cut Nut)
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    by Garry H (Cut Nut) » Apr 3, 2002
    Then the girdle is too thin because too much is exposed to knocks and chipping.

    6 claws would be safer, but this is an earing / pendaant stone or bezel set stone in my opinion.
     
    


    


  5. virginia1
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    by virginia1 » Apr 6, 2002
    How thick should I be shooting for if I want to place the stone in a 4-prong tiffany setting?
     
  6. Garry H (Cut Nut)
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  7. virginia1
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    by virginia1 » Apr 8, 2002
    I was trying to search on the internet, but I couldn't find this info right off the bat...so I figured I'd ask here--what are the % ranges that correspond to "medium" girdle thickness?
     
  8. pricescope
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    by pricescope » Apr 8, 2002
    Jlye99,

    Different labs use different systems for girdle thickness: GIA measures mm while AGS %:


    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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