The following pictures are of a Sassanian stamp seal made from Chalcedony that was bought on
a string of Chung dZi, but without either myself of the seller knowing about. It wasn't until much later that I discovered what it was.
I discovered this seal by mistake as it was included in a job lot of Chung dZi. It was some find as
it is worth more than I paid for the job lot! I have tried to research the cockerel but have found
nothing of significance. The quality of the carving is exceptional. Chalcedony is a hard stone
measuring 7-7.5 on the Mohs scale, the maximum being a diamond at 10, so it would have to
have been carved with something harder than 8, and there is not much choice. Corundum at
a hardness of 9, to which Ruby and Sapphire belong, or more likely diamond. It is also unusual in
that dome seals usually have a flat side where the design is carved, but I have never seen a seal
cut like this on the curve. It would have been a lot more difficult to do and keep the perspective.
It measures 20 mm in diameter, and 14 mm at its widest point.