This page explains the 4Cs of Diamonds – cut, colour, clarity, and carat weight – the most important characteristics to understand when making a diamond purchase.

Every diamond is unique and holds a remarkable story.

Buying a diamond does not have to be an uncomfortable experience. The Laqura Education Guide is designed to give you the tools and information you need to properly evaluate diamond quality and value with confidence.


The diamond cut is the most important element to consider when buying a diamond. The cut is the biggest factor in creating sparkle and fire, and without a high cut grade even a diamond of high quality can appear dull and lifeless.

Most Important

Cut is the most important of the 4Cs because it has the greatest influence on a diamond's sparkle.


Even if a diamond has a perfect clarity and colour grade, if it has a poor cut, it may appear dull.


Choose the highest diamond cut grade your budget allows. We suggest a cut of Very Good or better.


The second most important of the 4Cs is colour, which refers to a diamond’s lack of colour. The less colour, the higher the grade.

Second Most Important

When it comes to diamonds, less colour means higher quality. The higher the colour grade, the less colour there is, and the more expensive it will be.


For the best value, choose G-J diamond colour grades in the Near Colourless category. With these diamonds, the naked eye can’t discern any colour.


The top consumer choice are the near to colourless range of G-H-I as they are cost effective and are mid-range in color.


Almost all diamonds have small impurities or “inclusions,” but they are not always visible to the naked eye. The size and location of the inclusions play a significant role in determining the price of a diamond so it is important to understand clarity grades in order to make the most suitable choice.

Third Most Important

All diamonds are imperfect, because they’re made underground, most diamonds have small inclusions and blemishes.


It has no certain effect when looked at it from a distance, but when seen closely, the slight inclusions might be found on the diamond you purchase.


It is highly suggested to purchase diamonds in the range of VS and SI (Eye-clean only) as they offer the best value for money,


Diamond carat is often misunderstood and refers to a diamond’s weight, not necessarily its size. When comparing diamond carat sizes, take a diamond’s cut into consideration as well: a high-carat diamond with a poor cut grade may look smaller, often cut deeper, than a diamond with smaller carat weight and a better cut.


The diamond carat is the unit of measurement of a diamond's weight; larger diamonds being the rarest.


Consider cut and carat together; a larger carat diamond with a poor cut grade can appear smaller than a smaller diamond with a higher cut grade.


If a large carat weight is important to you, yet you're working within a strict budget, consider a diamond with a good cut, SI1-SI2 clarity, and an I or J colour grade.