We designed our Patagonia Necklace using an amazing combination of agate beads in different shades of brown, black, and white. We use the latest technology, a nylon braided line that is woven together to create superior strength and durability. Measuring 25 inches (63.5 cm) we feel that this is the perfect length, and our over the head design makes it very easy to take on and off. There is no metal hardware used on this necklace. Can withstand prolonged water exposure.