How to choose a pink and white gold ring for a girl?

I decided to surprise my girlfriend and give her a diamond ring. I'm choosing between pink and white gold, but I can't decide which is better. Who has already given such rings - can you tell me what looks more universal and what combination of metals is more often chosen?

There are cool variants of rings that combine pink and white gold - they look very stylish. The diamond in the center adds elegance to the ring, and the design itself is pretty versatile, suitable for different styles. Take a look at this princess diamond variant - it may be suitable for your girlfriend: http://pierrejewellery.com/katalog/rose-white-gold-ring-with-princess-diamond-3769r