What is typically meant by the term "dyeing" in the context of gemstones?

In the context of gemstones, "dyeing" specifically refers to a treatment process used to modify or enhance the color of a gemstone. This is often done to improve the visual appeal of the stone or to make it more commercially attractive by altering its natural color. The dye penetrates the gemstone's surface, resulting in a change that can either enhance the existing color or completely transform it into a different hue.

This treatment is especially common in various porous stones, such as howlite being dyed blue to resemble turquoise, or jade that is artificially colored. The goal is to achieve a more vivid or desirable color, which is why understanding the process of dyeing is essential for accurate gemstone evaluation and identification. Other options like enhancing clarity or adding shine involve different treatment processes altogether and do not pertain specifically to altering color, nor does the term relate to gemstone categorization.