Picasso made some jewelry that a single collector bought for $400,000:

All originally carried estimates of $15,000–$20,000. They all ended up with a single purchaser, who was not identified.“We’re pleased to see these works of art remain together,” Gloria Lieberman, vice president of sales at Boston-based auction house, said in a statement.Picasso made the pieces early in his career, Skinner said. He then gave three of those pieces to Françoise Gilot, the mother of two of his children, Claude and Paloma. Gilot passed them on Carole Mallory, who was engaged to Claude, and sold them through Skinner.

Picasso Jewelry Pieces Trample Estimates at Auction