Wallace Bishop - Quality Jewellers Since 1917

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Diamond Guide


The clarity of a Diamond is most commonly known as ‘nature’s fingerprint’ or ‘birthmark’.


Diamond Clarity

The majority of Diamonds contain small imperfections know as ‘inclusions’ – many of which are indiscernible to the naked eye. These inclusions are the natural characteristics of a Diamond (often fractures or small amounts of other minerals).

The fewer inclusions in a Diamond, the greater the clarity and the higher the value – the size or quantity of these inclusions determines the clarity grading that the Diamond is given.


There are 11 grades on the GIA Clarity Scale from flawless (FL) to Diamonds with obvious inclusions (L3). Most Diamonds fall into the VS (very slightly included) or SI (slightly included) categories.

In determining a clarity grade, the GIA system considers the size, nature, position, colour, and quantity of clarity characteristics visible at less than x10 magnification.

Diamond Clarity