Material: Sunstone

Firestone Gems tells us (paraphrased below):

"Sunstone: Associated with the radiance of the sun and the energy it produces to sustain life...a stone of leadership, encouraging the wearer to be open, benevolent and willing to bestow blessings upon others...a stone of joy, sunstone is believed to inspire good nature and an enjoyment of life...highly effective in cleansing auras and chakras. Sunstone is predominantly associated with the Base and Sacral Chakras."
https://www.firemountaingems.com/resources/gemstones?navsrc=left_GemstoneMeanings