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![](./images/clear.gif) 1.- ASTERISM IN BERYL, AQUAMARINE AND EMERALD; AN UPDATE
GEMMOLOGICAL ASSOCIATION AND GEM TESTING LABORATORY OF GREAT BRITAIN; LONDON; GBR; UNITED KINGDOM, 2004
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![](./images/clear.gif) 2.- PEARLS FROM THE LION'S PAW SCALLOP
GEMMOLOGICAL ASSOCIATION AND GEM TESTING LABORATORY OF GREAT BRITAIN; LONDON; GBR; UNITED KINGDOM, 2004
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