@NeedForSpeed, I think you will find that most yellow gold shank rings do have white metal prongs. I did, however, remember this Vatche ring featured on the Whiteflash page with yellow gold prongs. Hope this helps a bit!
6 Prong Solitaire Engagement Ring by Vatche. Experience classic elegance with the timeless beauty of the 6 prong solitaire engagement ring by Vatche. | 3608
I have a very warm color diamond, unlike yours. Also a different shape.
Here are a couple I found on James Allen's Website (recently completed)
Color of stone noted on the picture.
The yellow prongs have recently come back into fashion.
My L:
I have been following your purchase and your diamond will be white. You will love it! Do not let something you read about yellow prongs kill the joy you have over a beautiful ring set just like your girl wanted it set. I think you're a hero making sure she has the ring she has been dreaming about.
It's going to be a brilliant white - yellow prongs or not. Don't worry, you have a killer diamond!