The Carthusian Rosary

There are many versions of chaplets, although the most well-known is the Dominican rosary. The Bridgettine rosary is the one with six decades, and was traditionally worn by cloistered Carmelite nuns. From The New Liturgical Movement:

The Carthusian Rosary, with the austerity which characterizes everything about the Order’s way of life, has 50 Aves, and a different “mystery” for each one. In some places, it is the custom to interpolate into the Hail Mary a few words which refer to the particular mystery, as e.g. “Ave Maria, gratia plena... Jesus, qui resurrexit a mortuis. Sancta Maria etc.” for the Resurrection, or “Jesus, quem Virgo concepisti” for the Annunciation. In the article, you can find a list of fifty such interpolations, along with a bit more history of the Carthusian rosary; here are just the first three.

1. … Jesus, conceived of the Holy Spirit during the Annunciation of the Angel.
2. … Jesus, who together with you who has conceived him, visits Saint Elizabeth.
3. … Jesus, to whom you, virgin in body and soul, have given birth with joy. (Read more.)