WNET / PBS / NATURE, 1 hr

A glittering look at the most coveted and expensive natural substance on earth: the diamond. Journey behind the scenes of a glamorous London fashion show, an auction of precious gems at Christie's and the inner sanctum of New York's diamond dealers. Explore the depths of the world's largest diamond mine, a man-made Grand Canyon in the Australian outback, and peer into the Diamond Age--the future--where diamond fuel will propel planes across the country at 3000 miles an hour.