Jade stone in alpaca silver. It is a metal of the result of the combination of 50% of silver with 50% of copper. It is waterproof. The Chinese believed that since jade objects lasted so long, they were linked to immortality. They believe jade to also bring good luck, benevolence, purity, and enhanced intelligence. In the West, jade is thought to be a stone that can help the wearer be more relaxed and calm.