Corsi Collection of Decorative Stones

view of stone 856

Corsi 856, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 856  
Name and quarry location: Granito, probably granito di Corsica, from Corsica, France  
Geological description: Coarse-grained granodiorite with megacrysts of pink potash-feldspar, rather smoky quartz, and accessory titanite.  
Comments: This stone is not from Siena. Although similar to granito violetto (marmo Troadense) from Turkey, it is most probably from Corsica, France. This stone was imported by the Medici for use in pietre dure work in renaissance times.  
Further information:

Corsi's classification: Class 16. Granites; ii. Italian granites  
Corsi's text: 210.8 Granito di Siena  

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