I know that for a ring, I would much prefer platinum as I hear white gold, if you like the white look, needs to be plated with rhodium to maintain that color and to prevent the yellow from showing through. The plating will wear off with wear and rings take a lot of beating. But for earrings does it make any difference since it does not wear as much? Does the grayish color of the platinum make the diamond appear to shine brighter and whiter? Thanks!