• The relative clarity of a diamond can be influenced by the quantity, size, colour, orientation, relative placement, and visibility of inclusions. When greater clarity ratings are taken into account, diamonds become progressively more uncommon. Of all the diamonds that are mined, only around 20% have a clarity grading high enough to be suitable for usage as a gemstone; the remaining 80% are used in industrial applications.
• A sizable fraction of those in the top 20% have one or more obvious inclusions. Most consumers prefer "eye-clean" gemstones, which are devoid of obvious imperfections, however occasionally noticeable inclusions in jewellery can be concealed by the setting.
• The little point or facet at the base of the diamond is called the culet. If the diameter is too large, light will seep out of the bottom. 57 facets, or polished faces, make up a contemporary round brilliant; there are 33 on the crown, or upper half, and 24 on the pavilion, or bottom half.
• The majority of inclusions found in gem-quality diamonds have no effect on the structural integrity or performance of the stones. It could also be feasible to conceal some inclusions in jewellery by using mounting hardware like prongs in a way that makes the flaw undetectable. Nonetheless, a diamond's capacity to both scatter and transmit light may be impacted by thick clouds.
• A fracture may be more likely if there are large fissures near or breaching the surface. The main societies grade diamonds on a range from flawless to flawed.

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