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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 ...
Altar frontal of Italian opera di commessi, Dubrovnik Cathedral Detail of design with roses over crossed canes, 1882. 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 ...
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 ]
The Dropa [1] stones are purported pseudoarcheological artifacts. They are claimed to be a series of 12,000-year old granite discs with inscribed markings that represent an account of an extraterrestrial crash landing on Earth.
The Stone Merchant (Italian: Il mercante di pietre) is a 2006 Italian thriller-drama film produced, written and directed by Renzo Martinelli and starring Harvey Keitel. [2] It is based on the novel Ricordati di dimenticarla by Corrado Calabrò.
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.
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).
The mineral pyrite (/ ˈ p aɪ r aɪ t / PY-ryte), [6] or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula Fe S 2 (iron (II) disulfide). Pyrite is the most abundant sulfide mineral.