Treasures of the Earth: Gems
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.
More from Season 44
Episode 1
15 Years of Terror
From 9/11 to today’s crowd-sourced violence, trace how terrorists’ strategies have evolved.
Episode 2
School of the Future
How the science of learning may change education for all children.
Episode 3
Great Human Odyssey
Follow our ancient ancestors’ footsteps out of Africa and into every corner of our planet.
Episode 4
Super Tunnel
Join engineers as they build a massive new railway deep beneath the streets of London.
Episode 6
Treasures of the Earth: Metals
Gold, bronze, iron, steel... metals are pillars of our civilization, but what makes them so special? Discover their unique properties and explore how our mastery of metals has led us from the stone age to today's hi-tech world.
Episode 7
Treasures of the Earth: Power
Drill down to discover how Earth's natural treasures provide bountiful energy to power our modern world yet are also driving us to seek new, cleaner alternatives that can help us keep the lights on.
