Moonstone, as they name might suggest, is a gemstone surrounded by a certain mystique. In India it is said to bring good dreams to the wearer, and in Arab countries it is symbolic of fertility. Moonstones are also thought by some to be a stone for lovers, as it said not only to evoke tender feelings, but to protect them. It is also thought to promote understanding and calm.
Moonstone is one of the special gems characterized by an optical phenomenon known as 'adularescence', in which light seems to hover just over the surface of the stone, giving it a bluish-white glow, like the moon.