Clarity is one of the four Cs of diamond quality testing. The other three are carat (or size), colour, and cut. For the moment, let’s concentrate on clarity. For most people high clarity is a given when talking about diamond jewellery – not for nothing do we say ‘as clear as diamond’ but it does vary from stone to stone.
Tiny bubbles, cracks, and imperfections inside the diamond (or any other precious brilliant stone for that matter) can lower the clarity. Those that don’t have what it takes to warrant inclusion in jewellery are used for industrial purposes or are broken up so that the high clarity pieces can be used as smaller secondary stones. Fancy cuts can sometimes be used to remove areas of lesser clarity too.
Clarity is measured on a number of different scales, but most of them have the first few categories in common. F stands for flawless, and is the best possible class. It means there are absolutely no flaws that a trained eye can find under a microscope at 10x magnification. Next is IF or internally flawless. Stones of this class are still considered outstanding and ideal for inclusion in fine jewellery like wedding, eternity and diamond engagement rings.
After that come the VVS (very very small flaws) and VS (very small flaws) classes. These are still very good diamonds, clarity-wise. They can be found in all kinds of jewellery. While they have flaws that are visible under magnification, any stone in either of these classes will look perfectly clear to the naked eye.










