Green stone is a term used to describe a variety of gemstones that are green in color. The most common green stones are jadeite (7 letters), JADE (4 letters), EMERALD (7 letters) and chlorite (8 letters). Jadeite and JADE are both varieties of the mineral JADE, while EMERALD is a variety of the mineral beryl and chlorite is a group of minerals. All four of these green stones are popular for use in jewelry and other decorative items.