If you've chosen to shop online for a ring either because you want something hand-crafted from a unique material, or you just dislike jewelry chains, their prices, and their sales tactics, you'll probably still need to know your (or that someone special's) ring size before you buy. If you're in a pinch or want it to be a surprise, grab a roll of scotch tape and this handy ring sizing chart from Blue Nile to get a good idea of what size you should buy. More »