How much would it cost to get my diamond reset?

My fiance chose a white gold setting, despite my preference for yellow gold. I would like to get my 0.83 round diamond reset in a yellow gold band with platinum prongs (4). I am curious as to how much that would cost and whether the jeweler would take my 14K white gold band as part of the payment.|||I had a diamond reset to white gold and it cost about $200.-. DOn't know if he;ll take the old band or not. Talk to her/him.