Emerald is a rare and valuable gemstone and, as such, it has provided the incentive for developing synthetic emeralds. Both hydrothermal and flux-growth synthetics have been produced, and a method has been developed for producing an emerald overgrowth on colorless beryl which has been on the market since 1964. Synthetic emeralds are often referred to as "created", as their chemical and gemological composition is the same as their natural counterparts.

A Hydrothermal method is used to produce an emerald. It is based on transformation of melted crashed emeralds and deposit of consequent solution around the beryl seed in a hydrothermal environment.

The crashed low grade emeralds, known as nutrient, are melted along with color including chemicals, such as Vanadium and Chromium.

These natural coloring agents in emeralds, will then deposited onto a natural beryl seed. The seed, being a larger and more solid element in the process, attracts smaller particles of the same origin. The growth process begin by depositing layer upon layer itself with undulated growth lines in hydro thermally grown gems. The process takes around four weeks. If the process is slowed down, the “layers’ are deposited at a slower rate. It will then resulting a less defined growth lines and it will be more difficult to be detected