If you are considering purchasing an opal, you may be wondering what the highest quality opal is and how to determine its value. The quality of an opal is determined by a combination of factors, including play of color, body color, size, shape, and clarity. Opals with a strong play of color, a light body color, and few blemishes are generally considered to be of the highest quality. There are several different types of opals, including black opals, white opals, fire opals, and boulder opals, each with its own unique characteristics. When it comes to buying an opal, it’s important to do your research and work with a reputable dealer to ensure that you are getting a genuine, high-quality stone.