For the gal who has everything and realizes that flowers will not last forever, I introduce to you my conversation heart necklace...
I went with "be mine", as that is one of my all-time favorite conversation heart phrases; however, you could even consider a name or a date of importance. The necklace consists of a heart soldered to a 1/2" disc, a red coral rondelle dangle and a tag that is stamped and slightly hammered around the edges ($45 on either a 16" or 18" chain.)
If this doesn't suit your fancy, we have a ton of other options for your valentine:
Ladies...put that bug in your Valentine's ear, as the big day is just around the corner!