![]() 35).Pierre de Rosnel was goldsmith-in-ordinary to King Louis XIII of France, otherwise little is known of him. Nevertheless, as the author remarks "The most perfect are fished in the Persian Gulf, between the island of Hormuz & Basra, near Qatifa, Gombroon & Julfar" (p. Of this part, the second book treats pearls and contains several remarks on the fresh-water pearls of Scotland, which were then highly esteemed. ![]() The second part, divided into four books, describes numerous types of minerals and gems but also devotes several pages to bezoar stones and their supposed medical properties as described by Arab physicians. Special emphasis is laid upon the mines of the New World" (Sinkankas). Divided in two parts, the first part "is a mining & metallurgical treatise in which gold, silver, and mercury are described in respect to their mines and methods of mining, purification of ores by smelting or otherwise, and refinement of the metals. ![]() , 64, 176 pp.First edition of a "much esteemed and sought work" on precious metals, mining and gems, by a French goldsmith.
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