The phrase Spes In Deo ("Hope In God"), as well as its variant In Deo Spes are popular inscriptions found on ecclesiastical rings. Here I have a visualization of a modern gold ring design featuring these words.

Other well-known religious ring inscriptions include:

Deus dona vivas in Deo – May God grant that you may live in God

Vivas in Deo – May you live in God

In Hoc Signo Vinces – In this sign thou shalt win

Laus Deo – Glory be to God

Mater Dei Memento – Mother of God, remember (me).

Prayers and excepts of prayers can also be engraved on rings. Some historical examples of such engravings are:

AVE MARIA

AVE MARIA GRATIA

JESUS, MARIA

JESUS NAZARENUS

MARIA, ANNA, IH’US

Sometimes the prayers are not engraved, but rather represented by small knobs that can be used as beads for repeating Ave . Eleven knobs would signify eleven Aves and one Pater Noster . Such rings were called "decade rings", the term which was occasionally used in a corrupted form of "dicket rings".

The Greek letters Alpha and Omega are also often used in Christian ring designs, as well as Chi and Rho.