From royal treasures to modern masterpieces, these rings transcend mere jewelry — they are the ultimate expressions of rarity ...

Once in a blue moon there is one on New Year's Eve. Revelers ringing in 2010 will be treated to a so-called blue moon. According to popular definition, a blue moon is the second full moon in a month.

Colorado metalsmith Benjamin Bosworth likes to engrave rings with outdoorsy designs, like miniature engravings of the Boulder Flatirons or inlays of real elk antlers. But he’s just finished crafting ...