Excerpt from The Science of Gems, Jewels, Coins, and Medals: Ancient and Modern
Another form of seal is the very primitive one of a flattish round chalcedony pebble, with sufficient ground off one edge to afford space for engraving a subject, and a hole being made through the middle to receive a string, as a chalcedony, brought from Nineveh, having a very rough attempt in intaglio of a winged horse, the Phoenician symbol Sometimes the hole wa...
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