Material: Amber

Firemountain Gems tells us:

""Amber: Helps absorb negative energy and to release bright, soothing energy, helping to calm nerves and enliven disposition like a mental sunny day... facilitates chakra opening and cleansing..improves memory, increases mental flexibility and creates balanced decision-making...a talisman for courage and self-confidence & good luck to warriors in battle...symbolizes the renewal of marriage vows and is used to assure promises...worn by elders as a symbol of their endurance and wisdom."

https://www.firemountaingems.com/resources/gemstones?navsrc=left_GemstoneMeanings