An official liturgical book, Book of Blessings, includes “Orders for the Blessing of a Married Couple”.
There a four versions of this ceremony.
A. within Mass on the anniversary of marriage.
B. within Mass on other occasions.
C. Outside Mass
D. Shorter Rite (for Outside Mass).
For the blessings outside Mass, “115 The present order may be used by a priest or deacon. It may also be used by a layperson, who follows the rites and prayers designated for a lay minister.”
The Blessing Outside Mass has the following structure:
Introductory Rites
Reading of the Word of God
Intercessions
Prayer of Blessing
Concluding Rite.
In the Roman Missal, Masses for the Anniversaries of Marriages are found among the Masses for Various Needs, No. 11. There are three proper prayers given to use in the Mass: Collect, Prayer over the Offerings and Prayer after Communion. There are three versions: A. On any anniversary. B. On the Twenty-Fifth Anniversary. C. On the Fiftieth Anniversary.