I've got birthstones on the brain at the moment. Depending on where you come from and what sources you look at, there seems to be a little variation in what birthstones go with each month.
August's birthstone is peridot, a lovely, translucent olive green stone. Peridot forms in magma beneath the earth. The green is due to the iron present within the stone. Peridot is said to encourage assertiveness.
Modern alternates to peridot as August's birthstone are sardonyx, sapphire, jade and aventurine.
Sardonyx is said to encourage willpower and integrity.
Sapphire is said to clear unwanted thoughts.
Jade is said to encourage calm and empathy.
Aventurine is said to strengthen the heart.