These black lava stone diffuser beads are a great addition to any jewelry-making project. With a size of 14 mm and 14 beads per strand, there are plenty of options for creating unique and beautiful pieces. The porous nature of the lava stone makes it perfect for diffusing essential oils, adding an extra level of relaxation and aromatherapy to your jewelry. -14 mm in diameter -1 mm hole -Black Lava Stone Contains small parts. Not intended for children.