Although two diamonds may weigh exactly the same, one may well appear larger than the other when it is mounted in a piece if jewellery. A small diamond may appear larger if the selected setting shows it off to better advantage. Inclusions-a diamond's fingerprints. Most diamonds contain natural inclusions, which were formed during the crystallisation process. The type, number, size and position of the inclusion determine the clarity of the diamond.
Some inclusion are microscopic in size.
As long they do not affect the passage of light through the diamond, the inclusions will not detract from its beauty. Subtle variations in the clarity of a doamond can be detected by as experienced professional only after a lengthy and meticulous examination of the diamond using a loupe with 10 power magnification under normal light. 1- diamonds having inclusion which are quite obvious under 10x magnification and can be seen with thenaked eye. Most diamonds used in jewellery appear to be white or colourless to the untained eye, but, in fact, very few are totally colourless and therefore truly white. The colour of a diamond is important.