Since early
times, aquamarine has been believed to endow the wearer with
foresight, courage, and happiness. It is said to increase
intelligence and make one youthful. As a healing stone, it is said
to be effective as a treatment for anxiety and in the Middle Ages it
was thought that aquamarine would reduce the effect of poisons. A
legend says that sailors wore aquamarine gemstones to keep them safe
and prevent seasickness.