What does "cloud" indicate about a gemstone's quality?

The term "cloud" in the context of gemstone quality refers to a type of internal inclusion that appears as a hazy or opaque area within the stone. This cloudiness can indicate the presence of internal flaws or multiple small inclusions that affect light transmission and, consequently, the gem's overall appearance. While some gems may have minor clouds that do not significantly impact their beauty, more significant cloudiness can detract from the clarity and brilliance of the gemstone. Therefore, recognizing the presence of clouds is crucial in assessing a gemstone's quality, as they can adversely influence how light interacts with the stone, making it appear less vibrant or transparent.