Hi Tammy,
I'm one of the girls with yellow diamonds and I happen to have two. You have to shop around because the pricing can be somewhat expensive to truly crazy. One big warning, only buy diamonds that are certified to be of a natural color. Irradiated yellow diamonds used to be white but were "zapped" to turn yellow. Much less in value.
Below is the photo of my two babies! The big one is more of a champagne color, while the cushion cut is a fancy natural yellow, which I preferred over the other three "yellow" colors.