Hi MrOdell,
Richard is right, Pricing of Fancy colored diamonds is very sujective.
When I look at your GIA colored diamond report, I can see this diamond about 75% clearly Why? The fancy color grading has wider spread than D E F G H,..Etc...
Few poins are very clear from the report and that is the color grade, is pure yellow without secondary hues, color distribution even and color grade Intense. Clarity VVS1(nice but not as important)
When it comes to natural Yellow color grades,
GIA considers the first shade of yellow color pure yellow Y-Z shade, often called the Light yellow,... The next shade darker is the first Fancy color, Fancy light Yellow. A beautiful shade of distingt yellow,.. This greade is wide lets say so you can immagine how wide it is, compare the D,E,F to distance apart about one inch, and the Light Yellow approx, three feet! The next shade is Fancy Yellow, ( also three feet of it ) and next is Fancy Intense Yellow. This shade is much Wider than three feet, The highest color is Vivid yellow witch is extremely rare and redicoulously expensive. Vivid yellow is a gorgeous canary color and the diamond just glows with rich yellow color the tolerance is much less in this grade than the rest of yellows.
One think I would like to tell you before you invest in expensive diamond like this , is that Emerald cuts are also fairly rare cut to find in natural yellow diamonds. This is a great thing for collector, however if you are looking for getting the value you are paying for, not a good idea,... Why?
Emerald cut does not retain color, so your expensive stone may have a fancy certifficate, however the appearance would be equal to lesser shade of yellow and as low as Fancy light yellow under bright light,... It will look intense in low light only. So depending what the price of the stone is, unless you have to have it in your collection, I would look at other possible cutting styles available. Possibly Radiant cut with proper depth.
I have a pictures of two Intense yellow diamonds one is an Emerald cut and one Radiant I would like to share with you, however I cannot post them on this page because they both are compressed files and too small to fit the format of this page. Resizing them would damage the resolution and the colored diamond would look bad on the screen . If you wish I can email them to anyone privately. You would than understand my point and see the difference of the Intense colors between the two different cutting styles.
GIA rarely makes a mistake, however depending on the lab, if grading Emerald cut diamond the mistake can often be done . I have seen it happen several times! If the diamond looks to your eye like the color is as strong as comparable Intense yellow Radiant cut. Chances are that he stone is either bordering with Vivid Yellow or it is a Vivid yellow,... In that case I would buy it!
Prices for 1 carat for good color of Fancy Intense yellow are $10 000 + per carat with GIA certifficate. Em cuts asschers or stones lesser of clariy,.. less. Vivid yellow? Don't as me, I havent seen one in a loong time the price can be interesting,...
Best,
George
GLE Gem Imports