NOVA: Treasures of the Earth
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Apr 24, 2018
This program explains the formation, chemistry, variations and allure of the most notable gemstones; diamonds, emeralds, sapphires, rubies, jade and opals.
Metals: What is it about the nature of metals that have made them a pillar of human civilization?
Power: Drill underground to see the treasures that power our world—today and into the future.
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