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TED-Ed

The most colorful gemstones on Earth - Jeff Dekofsky

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6,164 Questions Answered

TEDEd Animation

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In November 1986, Australian miners climbed Lunatic Hill and bored 20 meters into the Earth. They were rewarded with a fist-sized, record breaking gemstone, which they named the Hailey’s Comet opal. Thanks to a characteristic called “play of color,” no two opals look the same. So what causes these vibrant displays? Jeff Dekofsky digs into the rock’s shimmering, dancing displays of light.

Watch the video and finish the Think section to complete the lesson.


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Meet The Creators

Educator
Jeff Dekofsky
Director
Ivana Bošnjak, Thomas Johnson Volda
Narrator
Jack Cutmore-Scott
Sound Designer
Spencer Ward
Music
Salil Bhayani
Director of Production
Gerta Xhelo
Editorial Director
Alex Rosenthal
Producer
Bethany Cutmore-Scott
Script Editor
Emma Bryce
Fact-Checker
Jennifer Nam

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