GIA does not note green hues in Cape series diamonds. In fact a diamond having a pure green hue saturation at or below G grade will be noted as a fancy colored diamond.kenny said:Can't say.
Very often pics are NOT accurately color balance.
Usually this is ignorance or operator error, but sometimes it's intentional to deceive an online buyer.
If there was ANY 'attractive' (see below) green hue you can be assured the professional owner would have sent it to GIA hoping to get a grade like Faint or Very Light Green.
If GIA determines both the material and color itself are of natural origin their green grade will be worth MUCH more money than even a D grade on GIA's white D-Z scale.
That said, I believe I read about a mine somewhere that produces diamonds with a green that's not 'attractive' enough for GIA to grade them on their FCD scale.
This also happens with brown, yellow, and gray.
The fast majority of E-Z diamonds have a hue that leans towards yellow, but when it's brown, gray, or green GIA may note the hue in the comments.