Quirky, sinuous, and frankly humorous, the bracelets, rings, necklaces, and pins designed by Alexander Calder seem to have lives of their own, independent of the humans they might perch upon. Calder Jewelry (Calder Foundation/Yale) is an ingenious collection of pieces made from homely materials (brass, steel wire, chunks of glass, stone, and broken pottery) that this jubilantly down-to-earth artist created for his family and friends.