Created in the early 1980s, this Tiffany & Co. 18K gold bomb bangle bracelet by Angela Cummings is inlaid with mother-of-pearl and black jade. The hinged bangle is inlaid with rectangular mother-of-pearl and black jade plaques shaped to lie flush with the domed surface, and outlined in 18K gold. This beautifully engineered bangle plays rounded volumes against checkerboard lines, resolving these contrasting forms of geometry into one sleek and intriguing composition.