The September birthstone is sapphire – a gem that's been cherished for thousands of years. Although the term sapphire usually refers to the blue variety of corundum (ruby is the red variety), this birthstone comes in a rainbow of other colors. Since Saturn rules the nervous system, the Blue Sapphire (Neelam) gemstone helps in handling nerve related tensions, neurological disorders etc. Wearing the Blue Sapphire provides protection against theft, terror, accidents, and problems caused due to natural calamities like storms, fire etc