Corsi 725, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History
| OUMNH Number: | 725 |
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| Name and quarry location: | Moss agate, agata di Sardegna, from Sardinia, Italy |
| Geological description: | White chalcedony (cryptocrystalline quartz) with subtle agate banding, and extensive dendritic iron/manganese oxides. |
| Comments: | Sardinia, Italy, may be correct provenance. Jervis (1881; 137) records a chalcedony with dendritic pyrolusite from Alghero, Province of Sassari. Corsi's specimen is a an irregular shape piece to which other slices and infillings of white plaster have been added to give the required external shape. It is partly hollow. |
| References: | Corsi (1845) 239; Jervis (1881) 137; Price (2007) 242 |
| Further information: |
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| Corsi's classification: | Class 14. Quartz and its varieties; Species 5. Agate |
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| Corsi's text: | 138.3 Agata di Sardegna |