People born between July 24 and August 23 come under this star sign. Ruby is the birthstone for July while Peridot and Sardonyx are the birthstones for August. Ruby's properties are true to its bright red hue as it symbolizes vitality, power and prosperity. It is a detoxifier and is good for lymph and blood. It also helps fight infections besides having a stimulating effect on other organs like the kidneys and spleen. Peridot comes in a beautiful olive green hue and has a relaxing effect on the wearer removing all negative feelings and emotions. It is believed to have a host of health benefits being beneficial in treating ulcer and sinus. It is also good for eyes and can counter various eye disorders. Sardonyx is nothing but a variant of Onyx that is formed of red bands instead of the regular black ones. It stands for vigor and stability and can promote creativity. It is believed to strengthen the immune system apart from having a healing effect on bones and lungs.