Sommerville, Maxwell. Engraved Gems: Their History and an Elaborate View of Their Place In Art. Maxwell Sommerville, 1889.
Reference
- Object[5]
- no[5]
- gem[5]
- seal (object)[1]
- graeco-roman[1]
- persian[1]
- sassanian[1]
- chalcedony[2]
- feldspar[1]
- lapis lazuli[1]
- sardonyx[1]
- yes[5]




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