NOVA. gems / Season 43, Episode 18, Treasures of the earth :

Their beauty has captivated us for millennia. Their cost can be extraordinary - some are even considered priceless. Precious gems like diamonds, rubies, emeralds, opal, and jade are the ultimate treasures of the earth, and each one is made from a specific - and often torturous - recipe of chemistry,...

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Bibliographic Details

Other Authors:	Randall, Terri (Director, Producer, Screenwriter), Sanders, Jay O., 1953- (Narrator)
Format:	Video
Language:	English
Language Notes:	In English.
Published:	Arlington, VA : Public Broadcasting Service (PBS), 2016.
Series:	Academic Video Online
Subjects:	Gems. Geology. Mines and mineral resources. Géologie. Documentary television programs. Educational television programs. Nonfiction television programs. Documentaires télévisés. Émissions éducatives télévisées. Émissions télévisées autres que de fiction.
Online Access:	Connect to this streaming video (Alexander Street Press)