The Opificio delle Pietre Dure is both a working restoration institute and a museum dedicated to the extraordinary Florentine craft of hard stone inlay. Founded by Ferdinando I de' Medici in 1588, the workshop developed the technique of cutting and fitting semi-precious stones — lapis lazuli, malachite, jasper, agate — into intricate pictorial compositions that could rival painting in detail. Tables, cabinets, and decorative panels produced here filled the Medici palaces and were given as diplomatic gifts across Europe.
The museum contains finished pietre dure works, technical samples showing the process, the original cutting tools, and design cartoons. It is genuinely unlike anything else in Florence. The Opificio remains active as Italy's leading fine arts restoration laboratory — the team that restored Cimabue's Crucifix after the 1966 flood, and later worked on the post-bomb damage to the Uffizi, is based here. The museum entrance is on Via degli Alfani, a short walk from the Accademia.