In Choosing a diamond for Engagement Ring or any item of jewelry, clarity(one of the 4 C's) in grading a diamond including cut, color & carat weight is of great importance in determining a diamonds value
Since diamonds for under tremendous heat & pressure over thousands of years, it is extremely rare to find a diamond without any internal or external flaws. In some cases, these flaws or inclusions are in the form of dark spots, cracks or clouded areas of the diamond and can be seen without magnification lowering a diamond value.