Illustration
An engraved amethyst ring of Roman Emperor Constantius II, c. 360 CE (British Museum, London)
License
This image was first published on Flickr.
Original image by Kotomi Yamamura. Uploaded by Mark Cartwright, published on 18 December 2012 under the following license: Creative Commons: Attribution-NonCommercial-ShareAlike. This license lets others remix, tweak, and build upon this content non-commercially, as long as they credit the author and license their new creations under the identical terms. Please note that content linked from this page may have different licensing terms.
