From Leonardo da Vinci's recipe for imitation pearls to the derring-do of deep-sea pearl divers, Pearls: A Natural History delves into virtually every aspect of the gemstones that have been prized since ancient times for their luster and purity. The fascination of this book--which accompanies an exhibition at the American Museum of Natural History in New York through April 14, 2002--is the way it effortlessly combines scientific, historical, cultural, and practical information. Key topics include different species of marine and freshwater mollusks, the history of perliculture and ecological issues affecting pearl production. The more than 200 photographs include reproductions of spectacular objects ranging from a 16th-century Russian icon of the Madonna and child encrusted in freshwater pearls to an early-20th-century brooch in which lozenge-shaped Mississippi River pearls create the opulent blossoms of a diamond-stemmed flower. Solid information, intriguing trivia, and inviting design give this book a broad appeal. --Cathy Curtis