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 19mm is the size of a US nickel 25mm is the size of a US quarter Saint Bibiana (Viviana, Vivian, or Vibiana) is a Roman Virgin and Martyr. The earliest mention in an authentic historical authority occurs in the "Liber Pontificalis,", where the biography of Pope Simplicius (468483) states that this pope "consecrated a basilica of the holy martyr Bibiana, which contained her body, near the palatium Licinianum " (ed. Duchesne, I, 249). The Basilica of Santa Bibiana still exists.