Amethyst and silver. The chain is made of silver. The grains are made of true amethyst. This on the cross, our Lady of the Miraculous also known as the Medal of Our Lady of Graces.
Romo of 6 mm .
The Miraculous Medal, also known as the Medal of Our Lady of Graces, is a medal, the design of which originated from Saint Catherine Labouré after her appearances of the Blessed Virgin Mary in Rue du Bac, Paris, France, and made by goldsmith Adrien Vachette.
According to the teaching of the Catholic Church, the use of sacramentals like this medal prepares people to receive grace and to disfare them to cooperate with it.