Brisbane diamond company clarity

CLARITY refers to the optical quality or purity of a diamond and is determined according to the presence, or lack thereof, of any internal or external imperfections. The more optically pure, the higher a diamond is valued.


A diamond’s clarity rating is based on the presence and visibility of internal flaws (called inclusions) and external flaws (called blemishes). Inclusions are naturally occurring impurities that can become embedded in a diamond during its formation. Blemishes can occur during cutting, polishing and wearing.


Clarity improves when a diamond has fewer flaws. A clarity grade is assigned based on the overall appearance of the diamond under 10x magnification.


Clarity is of the utmost importance when considering colourless diamonds, this is due to its effect on light entering and reflecting within a diamond. The higher the clarity, the more freely and efficiently light can travel, resulting in a more optimal light performance. However, clarity is less important when considering coloured diamonds. As the intensity of the colour increases, particularly within the fancy colour range, clarity becomes even less important.


There are five factors that determine how a major laboratory will assign a clarity grade to a specific diamond –

A note about internally flawless stones:

No inclusions and only insignificant blemishes can be seen under 10x magnification. These diamonds are very rare, beautiful and expensive and their blemishes can normally be removed by minor polishing.



 Key Points

BUYER’S TIPS – Which clarity should you choose?

It is always a good idea to balance the clarity grade of your diamond with its colour. If you are interested in diamonds in the D-F colour range, focus on clarity grades of VS2 or higher. For excellent value, look for G-I colour range diamonds with SI clarity.