Sunstone has many spiritual meanings, including: 
 
Leadership
Sunstone is said to encourage the wearer to be open, benevolent, and willing to bless others. 
 
Joy
Sunstone is known as a stone of joy, believed to inspire good nature and an enjoyment of life. 
 
Aura and chakra cleansing
Sunstone is believed to be highly effective in cleansing auras and chakras. It's predominantly associated with the Base and Sacral Chakras. 
 
Creativity, sexuality, and leadership
Sunstone is especially powerful for the sacral chakra, enhancing the forces of creativity, sexuality, and leadership. 
 
Self-worth
Sunstone is also known as the self-worth stone.