what is the value a fancy diamond yellow?

what is the value of a very intense vivid genuine yellow diamond that it flawless and totally unheated and untreated? how rare are they?

I have just been researching it lately as well. There are many factors but from what I found $20K – $35K per carot. The link has a good article: http://www.amgad.com/YellowDiamondArticle.pdf

Rarety for anything is inversely proportional to your net worth.

Good luck.

Intense Yellow Diamond
Intense Yellow Diamond
Intense Yellow Diamond