Large Onyx Wrist Mala/ Bracelet for Meditation onyx stone wrist mala with sliding knot. hand strung to fit any wrist size. Great for meditation This listing is for a onyx stone wrist mala/ bracelet for meditation. There are 18 large onyx stone beads on the wrist mala and each bead measures 10mm approximately. It is made adjustable to fit any wrist size with sliding knot. The beads came from Nepal and strung it by myself here. Prayer Mala or beads are usually used by Buddhists around the world especially in Tibet, Nepal and India and used for meditation, counting mantras, and prostration and those counters are especially for counting when you do prostration or in a retreat for counting mantras. Malas are worn on the left wrist while not in use.