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True...Date: 11/15/2007 7:31:47 AM
Author: Garry H (Cut Nut)
the best coloured diamond appearance is not achieved with the best colorless cut types
David, I know you or others here would not have the answer to this question..., but I do think it should be addressed and maybe someone from GIA is reading???Date: 11/15/2007 4:52:13 PM
Author: oldminer
As a consumer, I''d rather own the diamond that looked prettiest to me. Since I am a person who chooses moderation in most things, a diamond neither too dark nor too light would make me happiest. Someone else might prefer a lighter or deep color. Of course, I''d also want a sparkly, lively diamond which would be characteristic of a well cut diamond, but going for ''ideal'' proportions in a fancy is just not of utmost importance when ''color'' is the key factor of a ''fancy'' color.
I agree color is the most important factor when it comes to fancy colored Diamonds..., but then comes "cut"..., and based on my experience the majority of fancy colored Diamonds are poorly cut because color is first priority!!!
Naturally..., the thicker the girdle area of a colored Diamond..., the more color it retains. That together with the fact of painting the pavilion faceting/brillianteering to limit contrast appearance results in a Diamond which looks super lumpy, possesses the "face-up" color but lacks life or sparkle.
As a consumer, one could easily be wrongly convinced by an ''expert'' that ideal cut is desirable even if it truly was not. Its easy to convince someone who trust you to guide them. It is your responsibility to give them good and correct guidance unbiased by your desire to sell them what you happen to have. Nothing at all wrong with a very fine, ideal cut of any color, but the reality is that they don''t generally exist in fancy colored diamond due to the nature of diamond and its inherent light behavior.
You are pointing to ideal cuts..., I am talking about decent normal cuts as usually colorless Diamonds are cut by..., fancy cuts or rounds.
But please agree with me that when they exist (and they do) they fetch significantly higher prices than the ones cut to retain color.
I agree with you 100% that most fancy colored diamonds are cut with the "tricks" as you call them to retain color..., thats why I keep saying that the light fancy yellows (and even some fancy yellows) are actually modified cape colored Diamonds!!!
See this discussion: https://www.pricescope.com/community/threads/fancy-light-yellow-fancy-or-cape.66898/
A diamond dealer might be excited to consider the extra sales potential of ideal cut fancy color diamonds. I think that if you are selling synthetic diamonds, like the Gemesis products, which have very vivid colors, you could readily find and offer ideal cut synthetic fancy color diamonds. Finding natural colors of such a vivid nature would be pretty much impossible given the reality of how fancy colors are cut to enhance color over brilliancy.
Again..., I am talking about decent normal cuts as applied to colorless Diamonds (not specifically ideal cuts).
They dont have to be vivid..., even intense or fancy possessing a regular cut would command hefty premiums vs. its cut-for-color fancy colored Diamonds.
It is true..., they are rare..., but when around..., they are jumped on.
If someone had a set of vivid fancy yellow diamonds, all ideal cut rounds, they would be highly sought after. Making a regular business of such material would be impossible. The Ideal cut for a fancy color diamond is rightly based on how beautiful the color looks by virtue of the cutter''s skill, not by light return maximization which is key to colorless diamond grading''s ideal cut.
Good..., now back to my original question...
If they would be highly sought after..., and probably be worth more than their cut-for-color counterparts... (sometimes even more than the colorless ones, even "D''s"), why would GIA not issue a cut grade to go with its grading report???
Beauty is in the eye....Date: 11/16/2007 8:11:20 AM
Author: oldminer
If the GIA gave a cut grade to fancy color rounds it would serve to highlight the natural premium that dealers and collectors would willingly pay for. However, the majority of these stones are not ideal cut and might serve to negatively impact their value when the market currently does not so strongly react. I''m not sure of the overall economic impact and maybe GIA isn''t sure either. For that reason and maybe for other reasons, too, the GIA has chosen not to offer the cut grade for fancy color rounds. If they are reading this thread maybe someone will reply. It is a good question that interests many of us.
Makes sense..., the question who does it serve more..., sellers or buyers?
Certainly, many diamonds face up with more color when cut to non-ideal proportions and still look very beautiful in the overall.
First of all..., I am reminding the fact that I am not talking about ideal cut specifically..., but I am talking about beautiful cuts in general! cuts that are used on Diamonds..., colorless or colored.Date: 11/16/2007 3:29:14 PM
Author: dkodner
The ''sensible'' answer is that it would be misleading to the consumer to give it a cut grade. It would give the appearence that the GIA considers cut in it''s grading of the coloured diamond''s color.
It is a sensible answer..., I agree.
I think Gary said it best ''the best coloured diamond aprearance is not achieved with the best colorless cut types''
True..., its not achieved by any cut types..., the best colored Diamond appearances is achieved through mother nature itself. Its either found/mined with the color..., or not!!! The cut only uncovers its inner beauty and color and makes the gem pleasing and marketable!!!
I would not think you would get the most beautiful look in a ruby or sapphire by cutting it to what some consider the ideal cut for a round coloreless diamond, the same holds true for color in a diamond. Like it has already been said, color is the key, and the beauty and allure of a coloured diamond is often brought out of the stone by the masterful cutter adding an extra facet here, or a shallow angle there. Unlike white diamonds, which many in the cutting world are trying to make more of a science, cutting a coloured diamond is an art. Okay, there may be a lot of luck involved too. I sincerley hope we never get to the point where we see a cut grade on a coloured diamond report. That would only exist to be a somewhat misleading sales tool. They are in a lot of ways judging the cut on the color grade they give it. If the cutter did a good job, the lab comes back with the vivd or intense or deep the cutter was looking for, if they do a poor job, what could have been intense, may only face up to be a fancy. It seems to me (and maybe it''s just me getting older), but we keep trying to fit everything into neat little formulas, and our losing our ability to see and judge beauty, and that is where the true value lies.
David
http://oct.gemology.ru/oct/projects/fancycolor-7.phtmlDate: 11/16/2007 6:30:26 PM
Author: DiaGem
Dont get me wrong David..., I am not a great believer of the science part of the grading at all..., colorless or colored!!!,
And I believe that cutting Diamonds is an art..., colorless or colored!!! Luck is always a part of the cutting equation in both colored and colorless Diamonds
I know..., I know...,Date: 11/16/2007 7:20:05 PM
Author: Garry H (Cut Nut)
The earth is flat DG
http://oct.gemology.ru/oct/projects/fancycolor-7.phtmlDate: 11/16/2007 6:30:26 PM
Author: DiaGem
Dont get me wrong David..., I am not a great believer of the science part of the grading at all..., colorless or colored!!!,
And I believe that cutting Diamonds is an art..., colorless or colored!!! Luck is always a part of the cutting equation in both colored and colorless Diamonds
and
http://octonus.com/oct/projects/poster_2006.phtml
You can remain a ludite if you wish DG, but there is pleanty of real tangible practicale evidence
I believe before we discussed the excellent Gems & Gemology article from about 2 years ago that showed how bad symmetry in a round dramatically improves color (just as another example).
For example:Date: 11/16/2007 7:40:22 PM
Author: DiaGem
I know..., I know...,Date: 11/16/2007 7:20:05 PM
Author: Garry H (Cut Nut)
The earth is flat DG
http://oct.gemology.ru/oct/projects/fancycolor-7.phtmlDate: 11/16/2007 6:30:26 PM
Author: DiaGem
Dont get me wrong David..., I am not a great believer of the science part of the grading at all..., colorless or colored!!!,
And I believe that cutting Diamonds is an art..., colorless or colored!!! Luck is always a part of the cutting equation in both colored and colorless Diamonds
and
http://octonus.com/oct/projects/poster_2006.phtml
You can remain a ludite if you wish DG, but there is pleanty of real tangible practicale evidence
I believe before we discussed the excellent Gems & Gemology article from about 2 years ago that showed how bad symmetry in a round dramatically improves color (just as another example).
I am certain there will come a day you cut-nuts will adapt science to fancy colored cuts too...
Thats why I cant figure out why fancy colored RB''s are not part of the ''cut-nut'' equation.
You know me by now..., I measure the beauty of Diamonds a bit differently...
Garry..., which do you think is prettier???Date: 11/16/2007 7:56:58 PM
Author: DiaGem
Which was cut to thisDate: 11/16/2007 7:54:42 PM
Author: DiaGem
Or this one...
I am not certain...Date: 11/16/2007 8:09:35 PM
Author: Garry H (Cut Nut)
Definetly the rough, and i can understand why.
This would have been a wonderful case study for us.
But the lesthoto stone needs to be cut into several stones to make a return on it