The birthstone for September is sapphire. It is a variety of corundum (aluminium oxide), like ruby.
Sapphire is most commonly a blue gemstone, however other colors exist such as pink and yellow. It is found in various areas of the world including the USA. It is a very hard stone, which makes it suitable for uses other than jewelry, such as in scientific equipment.
If you’re looking for September birthstone jewelry, a great option to consider is this gorgeous natural gemstone bead necklace, which of course would complement a boho look:
Just beautiful!