* YOU NEED AN EMPTY STORAGE BOX ON BOTH CHARACTERS FOR THIS GLITCH TO WORK!
* IF IT STOPS WORKING ALL YOU HAVE TO DO IS GO BACK TO YOUR SECOND CHARACTER TAKE OUT THE PEBBLE AND PUT IT BACK INTO STORAGE THEN GO BACK TO YOUR MAIN CHARACTER AND IT SHOULD WORK!
This glitch lets you duplicated any stackable item in your inventory. its also a great way to level up your character by duplication blood echoes as much as you want. you can even duplicate blood stone shards,twin blood stone shards,blood stone chunks