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 What the dealer said .. cut vs. sym and polish

P:  10/23/2003 12:11:54 PM  
radiant_nyc
radiant_nyc

Rough Rock
Total Posts: 3
Last Post: 11/20/2003
Member Since: 10/8/2003
 
I visited a local jeweler yesterday based on a referral from a friend. We talked over the specs on the diamond I'm looking for. I'm looking for a square radiant ~ 1.5 and up/G/VS2.

She also asked me if I was looking for a particular range in 'cut'. Based on reading the messages here and help/feedback from you guys, I told her table% around mid 60's and depth 65-70. I can see those numbers would make a nice radiant according to the charts here and on gemappraisers. I think either she was stalling for an answer or just bs'ing me and proceeded to say that 'These numbers here, especially with a table in the mid 60's would make the diamond look small. And with the depth, the light return may not be the best. What you want is excellent symmetry/polish because that would make the diamond look the best'. She even proceeded to show me two very different diamonds just for comparison. I have seen diamonds with very good/very good and some good/good but can hardly tell the diff. My question to you guys are:

square radiant:
table mid 60's, depth 65-70 - good numbers? or irrelevant numbers?
should I stick with these numbers in my hunt for the diamond?

polish/symmetry:
is it that important? I read something here that says anything 'good' is good enough. will 'very good' or even 'execellent' make a dramatic difference?

Thanks for everyone's help.
This forum is a must for anyone shopping for a diamond.

Posted:  10/23/2003 12:11:54 PM

 There are 1 replies to this message.  There are 1 replies on this page.

P: 10/23/2003 4:21:22 PM
valeria101
valeria101

Ideal Rock
Total Posts: 14,048
Last Post: 4/30/2006
Member Since: 8/29/2003
 
Polish ans symmetry are good as long as they are not 'fair' and the stone is not HUGE. So, if you haven't seen a big difference in stones a jeweler has selected for his sales pitch, than that is probably the largest difference between G/VG you are likely to see. As for light return, polish and symmetry have little to do with it in comparison with the proportions of the cut (table, depth, crown etc, as you have seen). Granted, and unpolished diamond will not find sparkling easy, but you may be surprised of what a stone with realtively worse symmetry can do in the light dept. true enough, on GIA reposts you get symetry and polish grades but not light return greades, so, this is what the respective jeweler knwe and told you.

That a stone with a 60% table might look smaller than one with a 70% table: maybe, but the second will probably bounce less light. It really depends on wether size or proximity to 'ideal' proportions is more important to you, once you get to SEE the difference.

Just for fun, the Eight Star company has a pretty strong discourse about the relation between symmetry, polish and light return. Those are pretty strong (marketing) words they use, but the piece of literature is readily available... Hope this helps!

Ana "The greatest experts are only as good as the sum total of what they have seen." [Souren Melikian]

Posted:  10/23/2003 4:21:22 PM

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