A diamond’s clarity is unique and acts as a fingerprint. Natural Diamonds or
lab-created diamonds will often have
birthmarks, either internal (inclusions) or external (blemishes).
Diamonds are carbon exposed to tremendous heat and pressure deep in the earth. This process can result
in a variety of internal characteristics called ‘inclusions’ and external features called ‘blemishes.’
Evaluating diamond clarity will involve analyzing the number, size, relief, nature, and position of
these characteristics, as well as how these affect the overall appearance of the stone. While no diamond
is perfectly pure, the closer it comes, the higher its value. Inclusions are enclosed in a diamond or
extend into it f rom the surface. Blemishes confine to the surface of a polished diamond. Clarity
measures the incidence of natural inclusions or imperfections found in a diamond. The diamond that has
next to no visible inclusions are flawless, which makes it very rare and higher in value. Most
inclusions are not visible to the naked eye, so diamonds are examined under a 10x magnifying loupe to
determine their clarity. A diamond with several or large inclusions has less brilliance than a diamond
containing fewer or smaller inclusions. The flaws in a diamond interfere with the path of light as it
travels into, and then out of, the stone.