AMETHYST. THE AQUARIUS BIRTHSTONE COLOR IS SAID TO STRENGTHEN RELATIONSHIPS AND GIVE ITS WEARER COURAGE. Those born in February, or under the star sign of the water-bearer, have Amethyst as their birthstone color. This beautiful purple shade represents royalty. Indeed, there was a time when only those of royal blood were allowed to wear it. The name “amethyst” comes from “amethystos,” which means “avoiding drunkenness,” so the ancient Greeks thought that amethyst protected the wearer against intoxication. It is said to help maintain a level head, while the color’s legendary protective properties extend to warding off general ill-health.