Our Lady of Mercy Custom MedalAvailable in Sterling Silver, 14kt Yellow Gold, and 14kt Gold Filled. Three sizes to choose from: Large: 1 x 3 4 inch Standard: 3 4 x 1 2 inch Charm: 1 2 x 1 4 inch Saint Peter Nolasco received a vision from the Virgin Mary, also spreading to his confessor St. Raymond and King James, asking for the redemption of captives. After obeying her, she appeared again desiring a religious Order in the name of her mercy. They became the Order of Mercedarians,