Hoop d’ Loop Aquamarine Earrings. Gold plated double hoops. Aquamarine coin shape stone. 14Kt gold filled hooks. Aquamarine is a stone of courage. Its calming energies reduce stress and quiet the mind. Aquamarine is calming, soothing, and cleansing, and inspires truth, trust and letting go. In ancient lore, Aquamarine was believed to be the treasure of mermaids, and was used by sailors as a talisman of good luck, fearlessness and protection.