(Closed) Cushion cut problems….? Any diamond experts out there?

posted 4 years ago in Photos/Videos
Post # 2
Member
459 posts
Helper bee
  • Wedding: August 2015

It could just be that your limited inclusion(s) cause the dark spot…

Post # 3
Member
459 posts
Helper bee
  • Wedding: August 2015

So effectively due to inclusion(s), less light passes through that portion of the stone 

Just my $0.02 

Post # 4
Member
3682 posts
Sugar bee
  • Wedding: August 2013

I would ask on the Pricescope forums. It looks like it has a lot of light leakage under the table of the diamond. 

Post # 5
Member
2154 posts
Buzzing bee
  • Wedding: September 2014

If it’s a GIA VS1, then that’s not because of inclusions. I have a cushion cut also, and at some angles, I have something a little similar. I think it’s due to cut, and I believe they’re called “windows”. Most cushions I’ve seen have them from some angle,mine is seen if held diagonally in some lights.

Post # 6
Member
455 posts
Helper bee
  • Wedding: July 2012

Sorry not an expert but I do think that maybe this has to do with a lot of fancy shapes. I have a pear with an excellent cut SI2 F color and it does it at certain angles (see pic). I have a yellow cusion that does it as well. 

Post # 7
Member
2154 posts
Buzzing bee
  • Wedding: September 2014

schmeckpepper:  absolutely stunning set!!!!!!!!!!!!!!!

Post # 8
Member
3307 posts
Sugar bee
  • Wedding: November 1999

Inclusions have absolutely nothing to do with what’s happening with your ring.  The cut of cushions varies widely, and cut is key. “Very good” means very little. The cut on your stone probably is not the best.

Post # 9
Member
455 posts
Helper bee
  • Wedding: July 2012

WhatMaeBee:  Thanks so much! My new wedding band is being made right now so this is my stand in for now! Your cushion is gorgeous. my favorite cuts are pears ovals and cushions!!! 

Post # 11
Member
455 posts
Helper bee
  • Wedding: July 2012

EDubbs:  Yeah I think the fancy shapes are more temperamental. They have less facets than Round Brilliant cuts. I think with any diamond though you are going to find At certain angles it’s not perfect. All that matters is that at most angles it’s gorgeous! I tend to over think and analyze things sometimes but my pear is absolutely perfect to me flaws/ windows and all!

Post # 12
Member
3682 posts
Sugar bee
  • Wedding: August 2013

Again, if you want to hear from a bunch of legit diamond experts, you should head over to Pricescope, but to the best of my knowledge, the GIA cut grades for fancy shapes are meaningless. I have no idea why it’s on the certificate:

http://www.gia.edu/gia-faq-analysis-grading-system-fancy-shape-diamond

You can’t judge a fancy shape by the numbers like you can a round diamond. AGS evaluates cut quality for fancy shapes by looking at light reflection, but those kinds of tests (ASET, etc) are the only real way to look at the cut quality of something like a cushion. 

Post # 13
Member
2699 posts
Sugar bee

Looks normal to me. It is a large table – same with the pear. They behave differently than Round Brilliant stones. It’s stunning!

Post # 14
Member
60 posts
Worker bee

i have a 1.5 cushion and it does the same thing. My stone was also one of the best diamonds the high end jeweler had at the time so I doubt it’s a reaction to an average cut vs just how a cushion acts at some angles, especially as the stone is larger. Larger facets, larger windows…

The topic ‘Cushion cut problems….? Any diamond experts out there?’ is closed to new replies.

Find Amazing Vendors