Aquamarines are found in a range of blue shades, from the palest pastel to greenish-blue to a deep blue. While the choice of color is largely a matter of taste, the deeper blue gemstones are more rare. Remember that Aquamarine is a pastel gemstone, and while color can be quite intense in larger gemstones, the smaller aquamarines are often less vivid Aquamarine ( "water of the sea") is a gemstone-quality transparent variety of beryl, having a delicate blue or turquoise   color, suggestive of the tint of  sea water. It is closely related to the gem  emarald . Colors vary and yellow beryl(heliodor), rose pink beryl (morganite), and white beryl