Gems of the World
“It has been said to come from the treasure chests of mermaids. Sailors often took aquamarine with them to sea as a lucky charm to protect against shipwreck; sometimes the stone was carved with the image of Poseidon or Neptune, the gods of the sea. When it is immersed in water, the stone is practically invisible and the water in which it was immersed was long considered to have curative properties,”
- Gems of the World by Cally Oldershaw