Emerald cut proportion questions

[maximus1]

I was hoping someone could help me with a few questions...

I''m looking into getting my gf an emerald cut engagement ring. If I bought a .8ct EC with a larger than ideal table (say 70% instead of 61-63.5%), would the "ideal" proportions for crown height and depth be different?

Or am I overestimating the importance of all these numbers?? I''m buying online, so I can''t just go by how it looks (and I would have a tough time telling the difference anyway)

And why don''t certs show the crown height, if that''s a factor in determining quality?

Thanks for the help

 

[JulieN]

It''s all about the angles, not the heights, anyway.

If you''re buying online, pictures are crucial.

 

[oldminer]

Parametric screening by charts, such as the ones I have developed, do not really "GRADE" stones, but do assist people in finding the best candidates that may be worthy of spending money or time having them sent in for a look-see.

It is less likely, as the parametric factors go lower in the charts that you will like the stone for beauty or size, but beauty ultimately is your decision and not something we all agree upon. Some people equate beauty with "big", some with tiny yet fine, and others look at moderation. No one sets that bar for anyone else. Experts may agree on pretty versus ungly or fair looking, but consumers often choose a diamond that a dealer thinks is not so hot. The price may be absolutely a winner, though.

You can obtain the parameters you might want from most major lab reports these days or from a Sarin measurement. In the end, you''ll need to examine the diamond with your own eyes. It is bestto select from several and not just pick one without comparison.

 

[Tacori E-ring]

My table is 72% (going off of memory) and I think it is a beautiful stone. If you have seen it and like it, get it. Ignore the numbers.

 

[peridot83]

There are two things I'm personally looking at when evaluating a step cut:
1. Contrast pattern
2. Light return

The only way you can evaluate the contrast pattern, and if it looks right to you, is to have an actual picture of the diamond.

As for light return, the charts give you some number ranges that will maximize a sparkling diamond. For some people this doesn't matter too much, for others its everything (in which case an Emerald cut may not be your best bet).

Most people would suggest, instead of trying to calculate all the angles to get a vague guess of the light return, get an ASET or Idealscope image. Might as well get an ASET or Idealscope picture to evaluate the light return and look at the pattern in one go!

If you post the ASET or Idealscope pics, all we can tell you is our entirely subjective opinions on the contrast pattern (unless the symmetry is off), and give an objective view on the type of light return it seems you'll get based on the ASET or Idealscope.

But I wouldn't buy a step cut, even if it fit ideally into that chart, without looking at it first.

In general, the larger the table the more "glass flat" look the diamond will take. At 70%, this isn't extreme enough for people to say you should NOT purchase the diamond. Many people like the large table look, and it often makes the diamond look bigger.

Hope that helps!

 

[maximus1]

Thank you for all the replies everyone! I''ll definitely post pics here once I find one I''m seriously considering.

I''m planning on a solitaire setting. I saw another post on the board about an EC that someone said would look best with baguettes. If anyone has feedback on what type of EC looks best by itself, please let me know

Because of how ''understated'' the cut is, I''m thinking that ECs are extremely unforgiving when it comes to lower color or clarity. So I''ve been thinking not to go below F or VS2. Am I right in these assumptions? (I''m going off of what I''ve picked up over the last week or so)

And if a larger table can make the diamond look a little bigger without taking away from the brilliance, I''m all for it!

 

[maximus1]

Actually - maybe the shorter tables are the ones that look better without baguettes?

 

[JulieN]

EC solitaire is classic. I imagine you'll want it on the short side, definitely less than 1.4 l/w.

H+ would be fine. As for clarity, always ask. It is possible for some VS2 with visible inclusions and some SI1 without.