Sapphire, the birthstone of September, is most desired in its pure, rich blue color but is present in almost every color including pink, yellow and green.
In the Middle Ages, the gem was believed to protect those close to you from harm and also represented loyalty and trust.
The rarest type of sapphire is a pinkish orange variety called padparadscha, a name that comes from the Sanskrit word for lotus flower.
Because of this hardness, sapphire also has industrial uses. The Apple Watch features lab-created sapphire glass in its screen.
Deep blue sapphires have long been associated with royalty (which may have contributed to the naming of the color “royal blue”). Sapphires were often worn by medieval kings, who believed that the gemstones would protect them from their enemies.