A 17.64-carat cushion-cut blue spinel is surrounded by pear-shaped sapphires and diamond scales in this striking 18k gold and platinum bracelet. Blue spinel, carat weight 17.64; sapphires, carat total weight 77.11; diamonds, carat total weight 11.63. Price available upon request.
Hope Diamond ($250 million). Among the most romanticized jewels in the world, the Hope Diamond is housed at the Smithsonian's National Museum of Natural History and considered the second-most visited piece of art in the world (behind the "Mona Lisa"). Discovered in India in 1812, the 45.52-carat blue-gray stone has had many owners over the years. The diamond is also said to be cursed—including the alleged suicides of several of its owners.