There is a difference between a natural marriage (which involves at least one non-baptized person) and a sacramental marriage (which involves two baptized people). Two Jews, two Muslims, two Hindus, or two other unbaptized people can enter into perfectly valid natural marriages (and no one is accusing them of adultery or fornication so please don’t change the subject). Since they are not baptized they cannot receive sacraments.
See canon law: Can. 1055 §1. The matrimonial covenant, by which a man and a woman establish between themselves a partnership of the whole of life and which is ordered by its nature to the good of the spouses and the procreation and education of offspring, has been raised by Christ the Lord to the dignity of a sacrament between the baptized.
You’ve changed the subject. Initially you said that marriage left an indelible mark on the soul. Now you’re talking about sacraments of the living and sacraments of the dead.
To stay with your original point, sacraments that leave an indelible mark are ones that can be received only once. And if you’re about to say that someone can be married only once, I’ll ask you the same question I ask my RCIA folks: what happens if your spouse dies? Can you remarry in the Church? Of course you can. The vows you made were until death.
The Catechism explains more:
1121
The three sacraments of Baptism, Confirmation, and Holy Orders confer, in addition to grace, a sacramental character or “seal” by which the Christian shares in Christ’s priesthood and is made a member of the Church according to different states and functions. This configuration to Christ and to the Church, brought about by the Spirit, is indelible;40 it remains for ever in the Christian as a positive disposition for grace, a promise and guarantee of divine protection, and as a vocation to divine worship and to the service of the Church. Therefore these sacraments can never be repeated.