Corsi 756, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History
| OUMNH Number: | 756 |
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| Name and quarry location: | Diaspro di Barga, from Barga, Lucca, Tuscany, Italy |
| Geological description: | Milky white chalcedony with aggregates of red hematitic inclusions is cut by a rhombohedral network of fine calcite-filled fractures. Later chalcedony/colourless quartz replaces and is coloured by orange brown siderite. Secondary fractures are more sinuous and random. Dark brown areas are filler/polishing compound. |
| Comments: | From Barga, Tuscany, Italy. Jervis (1881) describes the precise locality, geological context, and the famous use of the Barga jasper in the chapel of the Princes in the Church of San Lorenzo in Florence. |
| References: | Corsi (1825) 187-188; Giusti (1992) 269; Jervis (1881) 357; Price (2007) 247 |
| Further information: |
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| Corsi's classification: | Class 14. Quartz and its varieties; Species 6. Jasper; ii. Italian jaspers |
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| Corsi's text: | 187.9 Diaspro di Barga in Toscana |