Silver pendant, Miraculous Medal (or Madonna delle Grazie medal, or Immaculate Conception medal)

Miraculous medal (or medal of Our Lady of Grace, or medal of the Immaculate Conception) is the name that the Catholic tradition has given to the medal made following what happened in 1830 in Paris, in rue du Bac n. 140, to Santa Caterina Labouré, novice in the convent of the daughters of charity of San Vincenzo de 'Paoli, who allegedly had Marian apparitions.
The "M" is surmounted by a cross, they are the initials of Mary and the indication of the cross of Jesus Christ. Below are two hearts, one surrounded by a crown of thorns, the other pierced by a sword.
Hypoallergenic 925 ‰ silver pendant. The surface is partially burnished and is neither treated nor plated so it guarantees its beauty over the years.