Braided bracelet with silver christogram

An 'ΙΣ ΧΣ ΝΙΚΑ' (Ἰησοῦς Χριστὸς νικᾷ) christogram translates as "Jesus Christ Conquers". It is located in the four corners of the cross, which is a depiction of the 'ΙΣ ΧΣ ΝΙΚΑ' arrangement according to medieval Greek tradition.