52:42

Tourmalines from Madagascar documentary of Patrick Voillot

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The Gemstone Journey

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The Giant Crystals of Brazil documentary of Patrick Voillot

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Ten Exotic and Phenomenal Gemstones

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All About Burma Rubies: The Gem of Legends

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WORTH OVER $100 BILLION. This Is How People Mine Huge Diamonds & Gems Hidden Deep Underground

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Pearls of Tahiti documentary of Patrick Voillot

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Hunting Down A Royal Blue Sapphire: Inside The Gem Trade | In Search Of Precious Stones | Ep 3/4