On July 18th 1830, Sister (now Saint) Catherine Laboure had a vision of Our Lady who described to her a medal which she wished struck. On one side it has the image of Our Lady, and the words, "O Mary, conceived wthout sin, pray for us who have recourse to thee"; on the other are the hearts of Jesus and Mary. Our Lady told Catherine that wearers of the medal would receive great graces, it has become known as the Miraculous Medal, and its wearing and devotion has spread worldwide
