Sapphire is September's birthstone and comes in all different colors except red. Red sapphires are exclusively called "rubies". That's because both sapphire and ruby belong to the corundum mineral family.
Pink sapphire helps open the heart Chakra and symbolizes trust, loyalty and sincerity.
If you want to learn more about sapphire and its symbolism, we recommend this article from the Gem Society's website: https://www.gemsociety.org/article/history-legend-sapphire-gems-yore/