What is a second class relic?

Answer 1

A second class relic is any object that a saint touched or used during his lifetime. An example would be an item of clothing he wore or any of his personal belongings. This is different from a first class relic, which is a part of a saint's body (his blood, bones, hair, etc.), and a third class relic, which is anything that has come in contact with a first class relic.

Answer 2

A third class relic is an object, usually a small piece of cloth, that has been touched to a first class relic. A first class relic is a body part - hair, bone, skin, etc. from the saint or an instrument of Our Lord's passion.

Answer 3

A first class relic is an item directly associated with Jesus Christ's life, like a piece of His cross, or it is the physical remains of a saint, like a piece of their hair or a bone.