Gemology of precious opal. Opal, the queen of gems – besides Australia, there is only one other place in the world where one finds crystal opal in commercial quantities: the Brazilian village of Pedro Segundo.For other language options (German, Spanish,French, Italian, Portugese, Mandarin) visit our website. www.gemfilmchannel.org

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3D panoramic view using the Hirox KH-7700 and the patented rotary head for gemology applications: inspection of diamonds, precious stones, mostly for inclusions.Discover more: http://www.hirox-europe.com

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