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Which one would you choose?? 40.6/34 vs 41/35 vs 40.6/35.5

flyingpig

Ideal_Rock
Premium
Joined
Nov 7, 2015
Messages
2,941
For a 4~4.5mm stone with 54~56% table, 50% star lenth, 80% girdle length and 3.5% girdle thickness, which of the following would you choose?

1. 40.6 pav / 34 crown
2. 41 pav / 35 crown
3. 40.6 pav / 35.5 crown

The optimal ranges are 34-35 for crown angle, and 40.6-41.0 (or 40.9 by some) for pav angle. But, 1 and 2 are shallow/shallow, deep/deep combos. For 3, 35.5 is deep for crown angle, but 40.6/35.5 combo qualifies for AGS ideal, whereas 1 and 2 don't qualify for AGS ideal, at least according to the following chart.
https://agslab.com/docs/pbcg/AGSLProportionCharts.pdf

I have read many mixed opinions on these three combos.

I am likely to buy a 0.25~0.35 carat diamond locally (Canada). I don't expect any vendor to provide me light performance images.

And what would you say about this one at $500 USD, just based on the report?. I have not seen this one in person yet.
http://www.gia.edu/cs/Satellite?reportno=5172391107&childpagename=GIA%2FPage%2FReportCheck&pagename=GIA%2FDispatcher&c=Page&cid=1355954554547

I know a $500 diamond is not that exciting. I am trying to "custom" build a platinum diamond ring under $1000.
 

Gypsy

Super_Ideal_Rock
Joined
Aug 8, 2005
Messages
40,225
Re: Which one would you choose?? 40.6/34 vs 41/35 vs 40.6/35

#1 is safest. #2 is a bad combo. #3 could be okay depending on table and depth.
 

mrs-b

Ideal_Rock
Premium
Joined
Aug 18, 2013
Messages
9,793
Re: Which one would you choose?? 40.6/34 vs 41/35 vs 40.6/35

Hi Flyingpig!

I don't know if the options you gave pertain to specific stones, but I'd be looking for a 34.5 / 40.8 combo. That's always my go-to combo for stones. My ideal diamond is always 34.5 / 40.8 / 61.2 (depth) / 56 (table) / 75 (LGF). I have a bunch of stones with those stats and they're always killer.

Failing that, agreed that #1 is best, tho I have seen some terrific 40.6 / 35.5 stones.

Good luck with your choice!
 
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