Tested as 14 carat gold.
Shape of a horseshoe.
Bought it online to use it as a pendant however it is too heavy for that purpose.
One side is glass or stone and the other is carved soldier head (roman?)
It is accompanied with its original box (I believe leather).
I believe it is a family seal however I wasn't able to find out any details regarding it's history and / or value...
Thank you for your time.