Sardonyx is a stone of protection and strength.  It promotes virtuous conduct and integrity.  Sardonyx attracts friends and good fortune.  It brings lasting happiness and stability to partnerships.  Supplements willpower and strengthens character.  Sardonyx increases stamina, vigour and self-control.  It alleviates depression and overcomes hesitancy.  Improves perception. Sardonyx heals lungs and bones.  It regulates fluids and cell metabolism, strengthens the immune system.