Sapphires are regarded as a gemstone that offers protection. They might protect the wearer against jealousy, malicious intent, and bodily injury. Sapphires were also believed to have therapeutic qualities. Priests are said to wear blue sapphires, which are regarded as a very spiritual stone. Finally, sapphires are one of the few gemstones that can display a six-rayed star-like natural asterism. Sapphires are corundum jewels, just as rubies. They come in every color of the rainbow, with the exception of red. Ruby is red corundum. The marketing of sapphires will be based on their color, such as purple or yellow. But the term "sapphire" by itself only describes the blue variety.