Carat weight is often the first thing new diamond buyers look at, but it shouldn’t be the only factor considered when comparing diamonds! A carat is a unit used to measure a diamond’s weight. One carat equals 200 milligrams or 0.2 grams. Although the carat weight and size of a diamond are related, the carat does not directly measure diamond size. Different diamond shapes of the same carat weight will appear to be different sizes since different shapes carry carat weight differently. For example, the elongated shape of oval diamonds can make them appear larger than round diamonds of the same weight.


Other than size and shape, nothing will affect your diamond’s overall appearance more than its cut. The cut of a diamond refers not to its shape, but to the balance of proportion, symmetry and polish achieved by the diamond cutter. The extent of how well a diamond is cut is directly related to its overall beauty. When a diamond has been correctly cut, the diamond’s ability to reflect and refract light is greatly enhanced. Brilliant Earth diamonds cuts are rated in the following order: Fair, Good, Very Good, Ideal, and Super Ideal. See our diamond cut chart. 


Colour is one of the most misunderstood diamond characteristics, with a common misconception being that near-colourless diamonds will not be as beautiful and sparkling as colourless diamonds. This absolutely isn’t true! Colour refers to the natural colour visible in a diamond that does not change over time. Colourless diamonds are icy white and look gorgeous set against cool white gold or platinum bands. However, some people prefer a slightly coloured diamond to match the warm tones of yellow gold or rose gold ring settings. Purchasing a near-colourless diamond over a colourless diamond can also drastically reduce a diamond’s price. Brilliant Earth diamonds are colour graded on a scale in order: J, I, H, G, F, E, and D. See our diamond colour chart.


A diamond’s clarity refers to the presence of natural microscopic characteristics on and within the stone. Internal characteristics are considered “inclusions”, and characteristics on the surface of the gem are known as “blemishes”. When a rough stone is extracted from carbon deep beneath the earth, tiny traces of natural elements are almost always trapped inside When gemologists inspect diamonds for clarity, they use a maximum of 10x magnification and only judge the diamond face up. If inclusion is not visible when the diamond is viewed from the top, then it cannot be used in determining the clarity grade. Our diamond clarity is rated on a scale ranging in order: SI2, SI1, VS2, VS1, VVS2, IF, and FL. See our clarity chart 

Clarity Chart