Green stones are a type of gemstone that come in a variety of colors, including green. Beryls, emeralds, and JADES are all types of green stones. Beryls are a mineral composed of beryllium and aluminum, and they come in a range of colors, including green. Emeralds are a type of beryl that is green in color and is highly valued for its beauty. JADES are a type of metamorphic rock that can be found in shades of green. All three of these green stones are popular in jewelry and other decorative items.