| OUMNH Number: |
736
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| Name and quarry location: |
Calcedonio di Volterra, Diaspro di Monterufoli, from Monterufoli, near Pomarance, Pisa, Tuscany, Italy
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| Geological description: |
Brecciated jasper; relatively unfractured large yellowish clasts, many with halos of yellow goethite banded with cream-coloured microcrystalline quartz. Matrix further away from clasts is colourless-milky agate.
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| Comments: |
Not from Dirillo River or any other locality in Sicily. This is 'calcedonio di Volterra' from Monterufoli, Pomarance, Province of Pisa, Italy; cf no. 740. The subtle variation in colour tone made this stone particularly suitable for portraying petals, shells etc, in Florentine pietre dure work.
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| References: |
Brizzi (1988); Jervis (1889) 320; Marrucci (1991); Price (2007) 245
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| Further information: |
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