CHAIN IS NOT INCLUDED Available in Solid 14K Yellow or White Gold or Sterling Silver Size Reference: 17mm is the size of a US dime 21mm is the size of a US nickel 24mm is the size of a US quarter St. Brendan called the Navigator the Voyager or the Bold is one of the early Irish monastic saints whose legends reflect their history. He is chiefly renowned for his semi-legendary quest to the Isle of the Blessed. The Voyage of St. Brendan could be called an immram (Irish voyage story). He was one of the Twelve Apostles of Ireland.