September 12, 2010
Low color grades can signify either yellowish or brownish hues in a diamond which is supposed to be colorless. Both colors are unwanted and reduce the diamond's price substantially, but I wonder if there's a significant difference between the impact brown and yellow have: Do both reduce the diamond's color grade in a similar manner? If I came across a M color grade diamond, for example, would it cost the same if the source for the low color grade is yellow or brownish hues?
September 18, 2010
When it comes to low color grades, the default and common assumption is that the diamond is rather yellowish, that's basically the default color for low color graded white diamonds. If the diamond is indeed yellowish, it surely has a low color grade, stated in the diamond certificate, and that's all the info one needs. If the white diamond has brownish hues, on the other hand, then that's a special case, and therefore along with having a low color grade the certificate would state that the diamond is brownish. The color grade might be identical to a yellowish diamond, but the fact that a diamond was recognized as brownish is considered an extra price reducing parameter. Still, remember that most jewelry stores don't deal with diamonds of such low color grades and prefer to compromise on I, J or K color grade at least. Only if you really settle for a poor looking diamond (and prefer to compromise on color rather than on clarity or carat weight, which I definitely do not recommend) there's need in comparing yellow and brown. Most customers, even not wealthy ones, don't come across diamonds in which they detect distinct yellow or brown colors.
For more info on diamond color I recommend checking out Zoara.com’s extensive learning pages.
September 13, 2010
Brown is worse than yellow. It wouldn't reduce the color grade more significantly than yellow, but the fact that the diamond is brown is considered a terrible downturn which inevitably makes customers willing to pay little for it. If you go to a diamond appraiser he would tell you that brown hues reduce a stone's value much more than yellowish ones.