Yup, it’s the seven sorrows rosary (it doesn’t always have medals, sometimes just our father beads like a regular rosary). Here are the instructions I give out when I sell one on how to pray it:
The Rosary of Seven Sorrows is a chaplet the recalls the seven major sorrows that the Virgin Mary suffered during the life, trails and death of her son, Jesus Christ. It is wonderful to say this chaplet often, especially on Tuesdays and Fridays.
This chaplet dates back to the middle ages, but the popularity has increased following the Marian apparitions in Kibeho, Rwanda.
The Seven Sorrows rosary is intended to complement, not replace, the traditional rosary.
During the Seven Sorrows rosary you pray seven sets of eight prayers (an Our Father and seven Hail Mary’s) instead of one Our Father and 10 Hail Mary’s. The Seven Meditations that accompany the prayers are as follows:
The Prophecy of Simeon (Lk 2:22-35)
The Flight into Egypt (Mt 2:13-15)
The Loss of Jesus in the Temple (Lk 2:41-52)
Mary Meets Jesus on the Way to Calvary (Lk 23:27-31)
Mary Stands at the Foot of the Cross (Jn 19:25-27)
Mary Receives the Dead Body of Jesus in Her Arms (Jn 19:38-40)
Jesus is Placed in the Tomb (Jn 19:41-42)
For further instructions on praying the Seven Sorrows rosary check out these instructional sites: