St Benedict medal round neck rosary in 925 volcanic lava silver

St Benedict medal round neck rosary in 925 volcanic lava silver. Rosary necklace with 3 mm beads in black volcanic lava, interspersed with faceted silver hematite beads. In the middle, there is a 1cm round pendant depicting the silver Saint Benedict medal. The choker is made of 925 silver with a rhodium finish, resistant to darkening, by a specialized Italian goldsmith. 43 cm long, it is adjustable thanks to the lobster clasp.