The most colorful gemstones on Earth - Jeff Dekofsky > Ted talk

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What gives opals their signature shimmering colors? Dig into the science of the gemstone’s formation, millions of years in the making.<br />
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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.<br />
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Lesson by Jeff Dekofsky, directed by Ivana Bošnjak and Thomas Johnson.<br />
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View full lesson: https://ed.ted.com/lessons/the-most-colorful-gemstones-on-earth-jeff-dekofsky<br />
Dig deeper with additional resources: https://ed.ted.com/lessons/the-most-colorful-gemstones-on-earth-jeff-dekofsky#digdeeper<br />
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Sound design: https://www.campstudio.co/<br />
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