The August birthstone is a combination of seven different gemstones: PERIDOT (7 letters), Sardonyx (8 letters), OPAL (4 letters), TOPAZ (5 letters), GARNET (6 letters), RUBY (4 letters), and CARNELIAN (9 letters). PERIDOT is a yellow-green gemstone that is believed to bring good luck and peace. Sardonyx is a banded variety of chalcedony quartz that is said to bring strength and courage. OPAL is a gemstone that is known for its rainbow-like colors and is thought to bring creativity and imagination. TOPAZ is a yellow-brown gemstone that is believed to bring joy and success. GARNET is a deep red gemstone that is said to bring health and vitality. RUBY is a deep red gemstone that is believed to bring passion and energy. CARNELIAN is an orange-red gemstone that is said to bring motivation and ambition.