The value of a diamond depends on its colourlessness. A
diamond may range from completely colourless to showing clearly visible
shades of colour. These shades do not affect the clarity nor the beauty
of diamonds.
The value of a diamond depends on its clarity as well and it can be classified according to a clarity scale. Like all other
natural gems, diamonds can have some typical inclusions, which may be
more or less visible. Inclusions are considered natural imprints of the
diamond crystal.
The cutting aims to make the diamond as bright as possible. The quality level of cutting is determined by the balance of symmetry and precision in details.