Few things in nature are flawless, and the diamond is no exception. When diamonds were crystallized in the depths of the earth, most formed inclusions like bubbles, specks, bits of other gems and so on... These minute inclusions were put in the diamond by nature, so they are part of its uniqueness, like your fingerprint. They are not necessarily structural weaknesses. Clarity refers to the absence of inclusions and blemishes found in the diamond.

It is the degree to which such inclusions interfere with the passage of light through the diamond that affects rarity, beauty and the quality and value of a diamond.