Medieval Silver Ring with Engraved Cross of Lorraine

Medieval Silver Ring with Engraved Double-barred cross, also known as the Cross of Lorraine.
The duke of Lorraine; Godefroy de Boullion, used this cross in his coat of arms when he took part in the capture of Jerusalem in 1099 AD during the first crusade. This cross was attributed to him and his successors.

Material: Silver
Period: Medieval period, 12th – 13th century
Measurement: 25 x 23 mm, ringsize: 19 x 21 mm (approx. 10 USA)
Weight: 5,41 grams
Condition Good, traces of age, see pictures