Aquamarine, also called Sea Turquoise. Aquamarine belongs to the beryl gemstone family, and has a more evenly distributed color than its relative the emerald. Gem-quality aquamarine is usually free of inclusions and possesses a superior brilliance, while bead-grade aquamarine tends to have many interesting inclusions and numerous opaque areas. The more intense the color of this stone, the higher its value. Aquamarine is a hard gemstone, which makes it an excellent choice for jewelry that will be worn frequently. However, be sure to store aquamarine beads in a dark place, as they often become paler if left out in the sun.