dZi stones (pronounced- "zee") have a long, rich history. dZi are stone beads of uncertain origin most commonly in Tibetan culture, the stones are believed to provide positive spiritual benefits. The most valuable dZi beads are several thousand years old and made of natural agate. The original source of these beads is a mystery. While the traditional, ancient beads are precious and rare, new modern-made dZi are gaining popularity around the world.