The term GREEN GEM MINERALS refers to beryls, a group of minerals that are known for their hardness and luster. Beryls come in a variety of colors, including green, and are often used as gemstones. They are mined from the earth and can be found in many different locations around the world. Beryls are composed of beryllium, aluminum, silicon, and oxygen, and are often used in jewelry and other decorative items.