Replica of a 14th century ring, which can hold a gemstone. Ring sizes 5.5 and 8 can hold a gemstone of 8x6 millimeter, and ring size 10.5 and 13 can hold a stone of 10x8 millimeter.
The band holds two phrases in latin:
Ave crux spes unica: Hail to the Cross, our only hope
Lex orandi lex credendi: The law of praying [is] the law of believing