Tibetan mala made with mixed mineral stones, in this case volcanic rock and lapis lazuli. Prayer rosary made with 6 mm mineral stone beads. To facilitate prayer, it has two different stones, arranged in this way: 18 lapis lazuli stones, then 18 volcanic rock stones, then 36 lapis lazuli stones, followed by 18 volcanic rock stones, ending with 18 lapis lazuli stones.The pompom at the end is black, matching the color of the Volcanic Rock mineral stone. Composition: Volcanic Rock mineral stone and lapis lazuli. Approximate length: 44 cm + bottom pompom - measured straight across.