| 31. | In April 1952, he was also named executive director of GIA, and then later assumes editorship of Gems & Gemology.
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| 32. | Liddicoat became editor of Gems & Gemology in 1952, and eventually editor-in-chief until his death in 2002.
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| 33. | In 2010, Richard was awarded the prestigious Antonio C . Bonanno Award for Excellence in Gemology by the Accredited Gemologists Association.
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| 34. | Sinkankas wrote 19 books and published more than 150 articles and was also editor of Gems & Gemology and Lapidary Journal.
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| 35. | In gemology, their luster is called adularescence and is typically described as creamy or silvery white with a " billowy " quality.
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| 36. | After retiring, he took advantage of his gemology degree from the University of Barcelona and joined the family's jewellery business.
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| 37. | However, after serving in the Royal Canadian Air Force during World War II, Patstone was still relying on his gemology career.
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| 38. | Another variant, " Treasure Traders ", variously used gemology terms such as " polishers ", " stone cutters ", etc.
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| 39. | It was here that he launched his own preliminary course in gemology on September 16, 1930, seeking to train and certify jewelers.
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| 40. | He was also director of the Brazilian Association of Gemology and Mineralogy, and president of the Friends of the Museum of Geosciences USP.
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