Thank you very much for viewing this item. Stone: Natural crystal, 1 bead, 12mm Number of stones: 17 Inner circumference: Approximately 19cm (stretches) String: Polyurethane rubber, quadruple knot Engraving: Ebisu Instant purchase welcome * Colors of natural stones may differ from the photos. * Colors may appear slightly different from the actual product due to lighting. * Please understand that cancellations, returns, and exchanges are not accepted after purchase.