Are there different classifications of holy relics, if so, how do we understand this? , F. Savvas

Are there different classifications of holy relics, if so, how do we understand this? [For eg. a piece of clothing from a saint compared to a bone fragment]?  , F. Savvas the Athonite Ἀρχιμ. Σάββα Ἁγιορείτου Ἱ.Μ. Ἁγίας Τριάδος Ἐδέσσης 

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