Aquamarine 4mm round beads. Aquamarine. Aquamarine which means ?sea water? because of its natural color being light bluish color. In the years of using this stone, heat treating it has removed the green component producing a colored blue stone as you will find in the market today. The more intense the blue color, the more valuable the stone. Aquamarine is the birthstone of March. Aquamarine is believed to bring affection and love when worn in earrings. Aquamarine symbolizes youth, hope and health. Aquamarine will work well with rose quartz or any pinkish shade stone or crystals.