Emerald is considered the most well-known and precious green colored gemstone. It’s stunning green color, blended thoroughly along with the rareness, make Emerald one of several most highly-priced gemstones. Deep green is regarded as desired color for Emerald. This green gems is the variety of Beryl family. Good quality emeralds are generally faceted into gems cuts for jewelry. It will become one of the most popular gemstones jewelry. Emerald is certainly vulnerable to pressure and knocking. The famous emerald cut is designed specifically for this gem to lessen the pressure during cutting process.

Colombia is the most well-known country that produces the best quality Emerald. Even though some country such as Zambia has been a recent significant producer also. Since the Cleopatra era, Emerald was mined in Egypt, known as Cleopatra's mine. Some important Emerald deposits are in Brazil, China, Russia, U.S. (North Carolina), South Africa, and also Mozambique.

Emerald defects are very common. The emerald is generally getting treatment to hide the crack with oil or artificial lubricants. The oiling treatment to Emerald is a common treatment and it’s already accepted by the gemstone collectors all around the world. By heating the rough Emeralds inside the place containing oil, the crack of the gems will be filled by the materials through the heat. The oil used for this treatment is cedar oil. Today, more effective fracture-filling techniques have been practiced, including the irradiation treatment.