""Notes on Turquoise in the East"" is a book written by Berthold Laufer and originally published in 1913. The book is a detailed account of turquoise, a semi-precious gemstone, in the context of Eastern cultures. Laufer explores the history, mythology, and cultural significance of turquoise in various regions of the East, including China, Persia, and Tibet. The book also includes a comprehensive analysis of the mineralogy and geology of turquoise,...