Sunstone purifies the 7 chakras and encourages strength, optimism, self discipline and a desire to serve others for the better. It is inspiring and brings happiness, freedom and independence and luck and reduction of stress and fear so also helps overcome phobias and depression as a good anti-depressive so you can relax and enjoy life. It also transforms negative into positive energy and wards off psychic attacks and aura energy leaking. It bring romance and abundance and can connect you with your spirit guide. 
If you have issues saying no to people, wearing this stone will give you the strength to stop being used and abused by others.
Uses - Leadership, Benevolence, Strength , Abundance, Depression and Phobias