Get the best deal on Aqua Marine Round Beads line. Named after the color of sea water, aquamarine is the blue to blue-green member of the beryl family. Readily available and moderately priced, the modern March birthstone makes an excellent jewelry stone. It 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. It was also considered a stone of eternal youth and happiness.