Most of the People who are familiar with the jewellery of emerald may also be known with the common treatments that emeralds go through. In the trade of gemstones, different varieties of gems undergo the treatment procedures for improving their durability and beauty. In the case of sapphires and rubies, it is done with exposure to heat treatment whereas, for emeralds, fracture-filling is the most common procedure.

The question arises, what is fracture filling? Emerald is one of the gems which is usually very highly included with internal debris, cracks and other sorts of things. For improving emerald's transparency, the stone is subjected to filling- usually with oil, natural or artificial resins, or proprietary polymers. The most common and oldest substance used is oil, it is recognised as the term- oiled emerald or emerald is oiled.

If you have purchased an emerald which is oiled, don't be afraid. Oiling treatment is a common practice for emerald which is a type of fracture-filling procedure. Believe that, over 90% of emeralds undergo filling procedures in today's markets.

Oils have a refractive index closer to the surrounding emerald's, and it makes fractures on the emerald's less visible to the human eye, and make a stone look beautiful and more clear.

Oils can sweat or seep out of emeralds for a long time. Excessive light or heat exposure can hasten the sweating of oil from an emerald's fractures. With the help of an experienced gem treater, the process can be re-done again. Some branded proprietary fillers provide a warranty of removal of the fillers without any kind of damage to the stone.

Many 0 may special cleaning care depending on the fracture-filling degree. Stream or ultrasonic cleaners are not advisable for the emeralds that are heavily fractured.