OUMNH Number: | 736 |
---|---|
Name and quarry location: | Calcedonio di Volterra, Diaspro di Monterufoli, from Monterufoli, near Pomarance, Pisa, Tuscany, Italy |
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. |
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. |
References: | Brizzi (1988); Jervis (1889) 320; Marrucci (1991); Price (2007) 245 |
Further information: |
|
Corsi's classification: | Class 14. Quartz and its varieties; Species 5. Agate |
---|---|
Corsi's text: | 184.14 Agata del fiume Drillo in Sicilia |