The term BERYL VARIETIES refers to the different types of beryl, a mineral composed of beryllium aluminum cyclosilicate. The most well-known variety is emeralds, which are green in color and highly valued for their beauty. Other varieties include aquamarine, morganite, heliodor, and goshenite, which come in a range of colors from blue to yellow. All of these varieties are prized for their hardness and durability, making them popular choices for jewelry.