Thanks to those of you voted and esp. those who chimed in! Here is an update. I was going to go with the yellow setting, BUT, my brownish pinkish diamond was too big! It weighs .59 carats and didn't fit...Soooo....I had it set in the white setting and then purchased a pink sapphire for the gold setting. So here they are!
It looks beautiful in the wg setting nala! I love the contrast - in hindsight I think the stone might have been lost in the yg - I love the pink and yellow combo. Worked out perfectly!