With the development of science and technology, people have invented various methods to optimize the treatment of jewelry and jade, some of which can greatly improve the quality of jewelry and jade, and are widely accepted (such as heat treatment of natural sapphire), while others can improve the appearance of jewelry and jade, but may also change some other properties of natural jewelry and jade (such as destroying structure, reducing durability, producing radioactivity, etc.). ), and these methods are not widely accepted. Jewelry and jade optimized by these methods can't be compared with natural jewelry and jade, and there may be great differences in value. Therefore, in the activities related to jewelry and jade (especially trade activities), it is necessary to reveal the jewelry and jade optimized by these methods. Therefore, the representation of optimized processing becomes an integral part of the naming of jewelry and jade.

Internationally, some countries and jewelry and jade organizations have formulated rules or schemes to optimize the representation of jewelry and jade, such as using words or letters to represent the optimized processing categories, but there is no unified representation in the world so far.

This standard combines the actual situation of our country and some international rules and schemes, divides and optimizes the treatment, and determines the expression method.