Most of the gemstones and their colors are natural, just as they were mined. Others, however, are enhanced through various processes, both chemical, thermal, or radiation to enhance their intrinsic color and brilliance. There are others still that are grown in the lab to achieve specific looks that may or may not exist in nature altogether. Then, there are pearls: nowadays, pearls are not harvested, but grown. For more information about these, and all of our other gemstones, click here.