No One Knows Where These Gems Came From

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Montana sapphires come in a beautiful array of colors found in a few other places in the world. But geologists have no idea where they originated.

Hosted by: Hank Green (he/him)
Videographer: Madison Lynn

Correction:
3:41 Typo - "Colombia"
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Sources:
https://books.google.com/books/about/The_Alluvial_Sapphire_Deposits_of_Wester.html?id=Rvl5tgAACAAJ
https://www.gia.edu/gia-news-research/sapphire-mining-upper-missouri-river
https://www.google.com/books/edition/Glossary_of_Geology/yD79FqfECCYC?hl=en&gbpv=1&dq=0922152349&printsec=frontcover
https://central.bac-lac.gc.ca/.item?id=nq94550&op=pdf&app=Library&is_thesis=1&oclc_number=61300525
https://www.gia.edu/gems-gemology/winter-2021-gemnews-update-mining-activity-yogo-gulch-montana
https://geologyscience.com/minerals/corundum/?amp
https://www.gia.edu/doc/GG-SU18-Renfro-Yogo.pdf
https://www.gia.edu/doc/GG-WN15-Zwaan.pdf
https://geology.com/gemstones/fancy-sapphire/#google_vignette

Images:
https://www.gettyimages.com/detail/video/rotate-faceted-blue-jewelry-gemstone-sapphire-stock-footage/1301719663?adppopup=true
https://gemgallery.com/montana-sapphire-gemology
https://www.gettyimages.com/detail/video/mining-gems-tunel-activity-stock-footage/1448509343?adppopup=true
https://flickr.com/photos/126377022@N07/14751072356
https://www.gettyimages.com/detail/video/droplets-splashes-up-in-the-air-from-a-creek-stock-footage/1404804950?adppopup=true
https://gemgallery.com/yogo-sapphire-history
https://en.wikipedia.org/wiki/Yogo_sapphire#/media/File:YogoPeakP318.jpg
https://en.wikipedia.org/wiki/Yogo_sapphire#/media/File:YogoPeakP318.jpg
https://www.gia.edu/doc/spring-2023-gems-gemology-characterization-montana-sapphire.pdf
https://commons.wikimedia.org/wiki/File:YogoSapphireExtraction.jpg
https://www.gettyimages.com/detail/illustration/world-map-geometric-abstract-retro-stylized-royalty-free-illustration/1436787507?phrase=world+map&adppopup=true
https://en.wikipedia.org/wiki/File:Citizen_Eco-Drive_Titanium_Sapphire.jpg

Видео No One Knows Where These Gems Came From канала SciShow