It is thought that the Dzi bead you wear always absorbs negative energy, that otherwise would have affected you. But, if your bead breaks, it means that it has absorbed so much negativity that it causes the bead to burst in order to relieve the negativity from you and your life.
If a large piece of your bead breaks off, it means that the bead is finished with its work. It is time for the bead to retire and you should allow it to rest and reward it for all the work it has done.
If you have a broken Dzi bead the best way to thank it for all the work it has done for you is to bury it some where around your house. This could be in a house plant or some where outside, near a tree or in the garden. Burring the bead is best, because in the ground is where the Dzi started. Think of it as the circle of life.
Medicine Dzi bead with Yellow jade and 24k gold