Swanky, I've heard that about body chemistry thing. I suspect that it really depends on when the ring was made and how the gold used to make the ring was made. I'm sure you ladies know that white gold really starts out as yellow gold and then they change the mix of ingredients and add others to make it white. Antique white gold was made with far higher standards for purity and most antique or even a lot of older white gold rings were never rhodium plated and yet they are quite white and remain so - because of the quality of the gold. My mothers White Gold wedding band for example outshines anything made today for whiteness and it is not even Rhodium plated. I do believe rhodium plating is really a relatively recent trend in the jewelry indutry used to cut corners. Jewelers save a buck by not being so strict about the standards for making white gold white and use rhodium plating to compensate for that. IMO, they should be required to let buyers know that a piece of jewelry is rhodium plated just like they are required to indicate that a diamond is clarity enhanced or otherwise treated.