David Webb carved jade, ruby and diamond Dreamer Necklace in hammered 18-karat gold and platinum. Price on request, (212) 421-3030. Credit... Still life by Anthony Cotsifas.

Gold, jade, macaw feathers, turquoise: Ancient American beauty at the Met March 2, 2018 More than 7 years ago “Serpent Labret With Articulated Tongue,” gold, Aztec, A.D. 1300-1521.