How common are inclusions?
Flawless diamonds are extremely rare and are very expensive. De-Beers estimates that only one in seven million diamonds recovered will produce a one carat D Flawless polished stone. Inclusions are naturally occurring characteristic and just because a diamond has inclusions doesn’t mean the it’s worthless. Most diamonds used in jewelry fall into the VS (very slightly included) or SI (slightly included) categories. To see most inclusions you would need to magnify the diamond.