The purity factor in the quality grading of diamonds is described by the second "C", the "Clarity". Clarity refer to a diamond's level of purity and purity and is determined by the presence or absence of internal and external characteristics.
The majority of diamonds contain impurities formed during their growth, mostly very small inclusions that hardly visible with a microscope or a loupe. The assessment of the clarity grade is fixed by a number of factors that can have an important influence on the final outcome. For this reason, experience plays an important role in the correct evaluation of the clarity grade.