Green gemstones are precious stones that come in a variety of colors, but the most sought-after are those with a green hue. Two of the most popular green gemstones are emeralds and JADES. Emeralds are a type of beryl, a mineral composed of beryllium aluminum cyclosilicate, and are known for their deep green color. JADES are a type of mineral composed of sodium and aluminum silicate, and come in a range of colors, including green. Both emeralds and JADES are highly valued for their beauty and rarity.