Aquarmarine is the March Birthstone! Aquamarine is a light blue stone that evokes calm, clear water lapping against mediterranean shores. It is believed to have a soothing influence on married couples, making it a great anniversary gift! Legend has it that Aquamarine was found in the treasure troves of mermaids and was blessed by the God of the sea. It is said that Aquamarine has the power to keep ships and sailors safe at sea.