18 kt gold and bronze ring. The stones are diamonds and the black pearl has a diameter of 18 mm. This jewel has been exhibited since 2007 in the silver museum of Florence along with sacred spider. It is the most spiritual shape of female madrepora close to the sacredness of life. The prayer is only a sweet waiting in the twilight of the moon and the whiteness will purify everything. I’m the black pearl, sea sickness and preciousness of the earth. The guardian of soul. Duplicated from the museum original.