Girdle thickness

[virginia1]

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!

 

[Garry H (Cut Nut)]

How will you set the diamond?

 

[virginia1]

Likely in just a classic 4-prong platinum tiffany setting--after all of the shopping that is the one she liked the best.

 

[Garry H (Cut Nut)]

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.

 

[virginia1]

How thick should I be shooting for if I want to place the stone in a 4-prong tiffany setting?

 

[Garry H (Cut Nut)]

Medium up to slightly thick.

 

[virginia1]

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?

 

[pricescope]

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%