Aquamarine's name comes from the words "aqua" and "mare," meaning water and sea, from its intense blue-green color. Because of its resemblance to the ocean, sailors used to wear talismans made of aquamarine depicting the god Neptune, who ruled the seas. With the help of their god, they believed the aquamarine would offer them protection from the elements. As far as lore goes sailors carried Aquamarine for protection from drowning or other accidents whole at sea, in today's world it is often carried for the purpose of safe travel over water and in fact it is a useful stone for those who suffer from Nausea as a consequence of Motion or Travel Sickness.
Health:
Aquamarine is used to rectify problems with Vision - especially that of Near and Far -Sightedness and problems related to the Eyes. It is also an excellent healer for stomach problems, the Teeth, Tonsils, Vocal Cords, Throat, Jaw and is particularly beneficial to those who suffer from Hay Fever. (Most effective for Hay Fever when combined with Green Aventurine.
Aquamarine has a soothing effect on the stomach and is one of the very few stones which alleviate the discomfort of Acid Reflux. This is a problem for many people particulary born between the months of January through March as my research has proven.
As it is my birthstone I wear for most of the issues above, near sight, stomach, and travel as I do travel frequently; it helps.
On a Psychological level Aquamarine is a stone of Courage, Peace and Confidence. Aquamarine is helps to ameliorate Fears, Phobias, Self-Doubt and protects against Unjust Enemies. It is considered to be a stone of Wealth and highly Protective from Accidents.
Aquamarine is known as the Stone of the Mystic Seer, bringing forth psychic impressions.