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In the high country of northern Sonora, between the old Rancho Arizona and the Planchas de Plata. Planchas de Plata (Spanish for slabs of silver ), sometimes called Bolas de Plata ( balls of silver ) is a historic silver-mining district near Nogales, Sonora , Mexico , and a few miles south of the border with the US state of Arizona .
The Opificio delle pietre dure, literally meaning "Workshop of semi-precious stones", is a public institute of the Italian Ministry for Cultural Heritage based in Florence. It is a global leader in the field of art restoration and provides teaching as one of two Italian state conservation schools (the other being the Istituto Superiore per la ...
After this, Domingo Martínez de Irala became the expedition's new leader, and he took up the goal of conquering the Sierra de la Plata and the lands of the White King. Irala decided to convert Asunción into the headquarters of the conquest, and ordered the colonists at Buenos Aires to tear down their buildings and move to Asunción.
A Goa stone or Lapis de Goa was a man-made bezoar that was considered to have medicinal and talismanic properties. Goa stones were made in Goa , India and exported to apothecaries in Europe from the mid-16th to 18th century. [ 1 ]
Pietra dura (Italian: [ˈpjɛːtra ˈduːra]), pietre dure ([ˈpjɛːtre ˈduːre]) or intarsia lapidary [1] , called parchin kari or parchinkari (Persian: پرچین کاری) in the Indian subcontinent, is a term for the inlay technique of using cut and fitted, highly polished colored stones to create images.
Pietra serena was very popular in Italian Renaissance architecture, and because of this the quarries where the stone was found were exploited.Numerous quarries surrounding the Florentine region of Italy have been found both under and above ground, and each quarry was distinct in the variety of pietra serena formed there due to the differing style of rock formation.
The Vía de La Plata (Silver Way) or Ruta de la Plata (Silver Route) is an ancient commercial and pilgrimage path that crosses the west of Spain from north to south, connecting Mérida to Astorga. An extended form begins further south in Seville and reaches north to the Bay of Biscay at Gijón .
A rough specimen of bloodstone. Heliotropes (from Ancient Greek ἥλιος (hḗlios) 'sun' and τρέπειν (trépein) 'to turn') (also called ematille, Indian bloodstones, or simply bloodstones) are aggregate minerals, and cryptocrystalline mixture of quartz that occurs mostly as jasper or sometimes as chalcedony (translucent).