Diamond News
An early Byzantine almandine garnet engraved with a Christian motif and dated to the late sixth to eighth...
GIAAn early Byzantine almandine garnet engraved with a Christian motif and dated to the late sixth to eighth century offers insight into ancient garnet trade, possibly along the Maritime Silk Road. The gemstone was characterized by a combination of nondestructive analytical methods including electron microprobe, portable X-ray fluorescence, Raman spectroscopy, and optical microscopy. See more in the Summer 2018 issue of Gems & Gemology. http://bit.ly/2PL2NLO Photo: Karl Schmetzer
