Aquamarine, together with emerald and beryl, belongs to the beryl group it is named Latin , Water of the Sea because of its sea water color. A dark blue color is the most desired color. There are Aquamarine deposits in all continents. Aquamarine has a hardness of 7-8 on the Mohs scale. The birthstone for March and Astrological sign Scorpio. Aquamarine is a stone of purity, preserve married love and sharpen intellect. Stone of spiritual seekers, best color clear blue.