Gemstones like diamonds, rubies, opal and jade are the ultimate treasures. Delve into Earth's depths to discover how these precious stones are forged and what explains the unique allure of each captivating gemstone.

NOVA Season 44 Episodes...

• s44e01 - 15 Years of Terror
• s44e02 - School of the Future
• s44e03 - Great Human Odyssey
• s44e04 - Super Tunnel
• s44e05 - Treasures of the Earth: Gems
• s44e06 - Treasures of the Earth: Metals
• s44e07 - Treasures of the Earth: Power
• s44e08 - Secrets of the Sky Tombs
• s44e09 - The Nuclear Option
• s44e10 - Search for the Super Battery
• s44e11 - Ultimate Cruise Ship
• s44e12 - Secrets of Origami
• s44e13 - Killer Trains
• s44e14 - Holocaust Escape Tunnel
• s44e15 - Himalayan Megaquake
• s44e16 - Chinese Chariot Revealed
• s44e17 - Poisoned Water
• s44e18 - Eclipse Over America

NOVA Show Summary

Seen in more than 100 countries, NOVA is the most watched science based television series in the world and the most watched documentary series on PBS. It is also one of television's most acclaimed series, having won many major television awards, most of them many times over.