No main cast listed for this episode.
NOVA — S44E5
Episode: Treasures of the Earth: Gems
Air Date: 2016-11-02
Runtime: 55 min
Overview
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.