Emeralds are the most famous of all the green gems and are a variety of the mineral Beryl. As it scores an 8 on the Mohs Scale of Mineral Hardness, emeralds are significantly hard.Emeralds are notorious for their inclusions or internal and external flaws. These inclusions are also called “Jardins” which is French for “Garden” Many gemstone manufacturers resort to filling the inclusions with oils in order to bring an artificial luster to them. For More Info Visit: Lenya’s Online Jewelry Store