Since the 1990s, the archives at the Petit Palais in Paris have gathered an unusual collection: thousands of drawings of jewelry designs, many of which have been shown only rarely, and never in ...

Ms. Landaw recognized the power of kid-designed jewelry to do just that in 2016, when she asked her then-5-year-old son, Jack, to form a piece of wax into a pendant that she then cast in gold for ...