The Cullinan Blue Diamond Necklace, featuring a bow motif with nine sparkling and extremely rare blue diamonds, recently joined the National Gem Collection in the Smithsonian’s National Museum of Natural History. The necklace is the gift of Stephen Silver. Containing 5.32 carats of blue diamonds and 251 other diamonds, the necklace is now on view in the Harry Winston Gallery of the Natural History Museum next to the Hope Diamond. (Photo by Chip Clark)
