Remember That Time

I have a beautiful ring that my significant other gave to me as a present. It is a Le Vian design with a white gold and yellow gold setting with 1.5 carat of diamonds designed into it. Recently, he got me a lovely Anne Klein automatic watch. It is white gold band with a yellow gold band running through it. It has crystal accents on the band and bezel (sp?). It matches the ring perfectly. Now, my question is. Can I wear both at once? What is the fashion policy on wearing a watch and a ring? Do they/Can they be worn on the same hand/wrist? Or is watch worn on the left hand regardless of which hand the ring is worn on? (I wear my ring on the right...) So, what is fashion etiquette concerning watches and rings and hands and wrists? Thanks for your help!