Is the below accurate and if not do you have a credible reference:
St. Teresa, who died in 1582, is an example of how obsessed earlier Catholics were with relics of the flesh. After her death, a priest cut off her left hand, from which he took a finger, wearing it around his neck for the rest of his life. Followers later removed her heart, right arm, right foot and a piece of jaw to display as relics in various sites.
This site confirms various body parts of St. Teresa are in various locations:
It's scriptural:
Judges 19:29
When he reached home, he got a knife. He cut up his concubine. He cut her into 12 pieces. He sent them into all of the territories of Israel.