Corsi Collection of Decorative Stones

view of stone 711

Corsi 711, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 711  
Name and quarry location: Quartz 'rock crystal', from Madagascar  
Geological description: Part of a large single crystal of rock crystal, the colourless variety of quartz. Some gas inclusions are evident along internal crystal planes.  
Comments: Rock crystal was being brought from Madagascar to Europe as early as the 18th century and it was one of the main sources of large colourless quartz crystals in Corsi’s time.  
References: Bauer (1904) 471-481; Corsi (1845) 233-235; Frondel (1962); Price (2007) 238; Raulet (1999); Webster (1994) 219-225; Zeitner (1996) 63-84  
Further information:

Corsi's classification: Class 14. Quartz and its varieties; Species 1. Rock crystal  
Corsi's text: 177 Cristallo di rocca. Cristallo limpido... proviene dall'Isola di Madagascar  

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