GRS Gemresearch: The world’s only moving calcite crystal inside amber formed during dinosaur times

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GRS Gemresearch Documentary: Colombian Emerald Mines - Sample Collection Chivor Mine

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GRS Gemresearch Documentary: The Mozambique Ruby Collection - A Lifetime Experience

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GRS Gemresearch: Fake Gems in the Market - Synthetic Periclase

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GRS Gemresearch Documentary: A Journey to Mogok

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GRS Gem research Documentary : Expedition to the new Winza ruby mines (Tanzania) 2009 (Remastered)

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GRS Gemresearch Talk: World of Magnificent Spinels Provenance and Identification 2012

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The Perettiite Space Odyssey

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Gem Research Swisslab GRS Certified UNHEATED Natural 600+ carats/cts Blue Topaz

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GRS Gemresearch Fun-stuff: MINERS DANCE AFTER FINDING A BIG SAPPHIRE

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GRS Gemresearch Documentary: Colombian Emerald Mines - Interview Part 1

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GRS Gemresearch Documentary: Discoveries in the Mandalay Gem Market

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GRS Gemresearch: Unusual Phosphorescent Pebbles Identified as Synthetic Aggregates

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GRS Gemresearch Documentary: Sapphire Mining in Madagascar (2008)

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GRS Gemresearch Documentary: World-record pigeon's blood rubies discovered in Madagascar

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GRS Gemresearch Documentary: Colombian Emerald Mines - Areal Footage Chivor and Cunas

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GRS Gemresearch Documentary: World-record pigeon's blood rubies discovered in Madagascar, Part 1/5

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From Rough to World Record - Estrela de Fura - 55.22 ct

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GRS Gemresearch: Book Launch 'Pigeon Blood Valley' at NHM in Vienna

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