How To Choose a Diamond

Choosing a Diamond

A good understanding of diamonds is necessary to help find the right one for you. A diamond's quality and price are determined by the 4Cs: cut, color, clarity and carat weight. Since all of our diamonds must meet certain standards in terms of these 4Cs, you can already be assured that all of our diamonds will have exceptional qualities. When selecting a diamond, look for one that captures your heart without straining your budget.

Here is a video and guide to help you understand the 4 C's a little better:

The 4 Cs of choosing a diamond:


When people think of diamonds they often visualize a sparkling white transparent stone, commonly found on engagement solitaires and the necklaces of film stars, but the reality is that diamonds are actually available in a range of colors. Some colors such as deep pinks are exceedingly rare and accordingly expensive but other colors including blues greens and yellows are available and can really enhance the appeal of your jewelry. These non-yellow or white colored diamonds are referred to in the trade as “fancies.” It is important to remember that in order to get the full spectrum of refracted color, a clear, (white) colorless diamond produces the best results as any color in the stone limits refractivity and hence the spectrum produced is limited.

The color grading process is performed by those who have exceptional skill in diamond quality assessments and has a large bearing on the cost of a diamond. There are many charts by which color is matched and the contributes to the determination of the value of the stone.


This is perhaps the most important of all the quality components of a diamond as most diamonds have some form of imperfection that lowers their value. A completely clear diamond is therefore and expensive item but will be correspondingly sparkle brilliantly. For smaller diamonds this is not noticeable to the untrained eye where there are only minor blemishes in the crystal structure. These blemishes can vary in size and are classified by looking at the diamond through a 10x lens and grading the inclusions by size/shape etc. the result is a list of surface or internal blemishes that an expert can use to grade the diamond.

Imperfections can be on the surface, where a cut has intersected a blemish or an inclusion where the blemish is completely inside the stone. Either way, these imperfections are very common and generally do not affect the brilliance of a diamond too much until they are big enough to see with the naked eye. Any blemish however will have some effect on the refraction of light to an extent and affect the spectral output of the stone. All our stones are chosen for their quality – we never use low grade stones in our pieces.


The choice of cuts is related to the initial shape of the uncut stone, and the amount of brilliance the finished stone will emit. There is no hard and fast rule; it is one of the innate skills of an expert diamond cutter to choose and create cut patterns that offer the best reflectivity and prismatic response to light. The absolute best way is to simply look at comparative shapes and cuts to determine what is right for you and which one you think offers the most brilliance – although that is not always a deciding factor, design shape and color are also important factors.

The better quality the cut, the more sparkle so to find the perfect one for you, turn down the lights and shine a single spot on them to see which ones offer the brightest sparkle. The better the cut, the more reflections and colors you should see. All our diamonds are cut by master diamond cutters with many years of experience so you can be sure of a high quality cut whatever piece of jewelry or stone you buy. You will see for yourself the sheer brilliance of the stones we sell.

Carat Weight

This is the easiest of factors to determine as is it is a simple weighing process. Diamond weight is measure in carats which is exactly 200 Milligrams (mg) or 1/5th of a gram 0.007055 oz.).

One carat is typically divided up into 1/100ths so a typical gemstone for a ring for example might weigh 0.75 Carats (150 mg). The largest diamond in the world is the Golden Jubilee Diamond weighing an enormous 545.67carats cut (3106.75 carats uncut). It is considered an ugly stone however, as its color is a deep yellow and not deemed that attractive to most. The King of Thailand now owns it and it is said to be incorporated into a new piece of state jewelry at some point.

At the more usually seen end of the carat scale are diamonds ranging from the relatively small at under a ¼ carat, to the larger at perhaps 5 carats or more. An engagement ring for example typically bears a solitaire diamond centerpiece at between 0.5 and 2 carats but obviously the more money you can afford; the larger the weight in carats a diamond can be and can be obtained at up to twenty carats or more for a single stone. The carat weight is an obvious pointer to the value of a stone but the cut/color/clarity are other major factors affecting the price.