ALL ABOUT
DIAMONDS
Choosing the right diamond
Our guide to the 4Cs (carat, cut, colour and clarity) of diamonds will help you to understand the language of diamonds as well as enabling you to choose the right diamond for you and your budget.
From the Greeks, who thought diamonds were the tears of the gods to the Indians who thought of diamonds as good-luck charms, diamonds have been immensely valuable to many cultures. The rare, precious, magical and indestructible qualities of diamonds has made them the perfect symbol for romance and true love.
Carat
The carat is the unit of weight for diamonds. A carat weighs 0.20 of a gramme and is divided into 100 points, therefore a three-quarter carat diamond is 75 points, a half carat diamond is 50 points and a quarter carat diamond is 25 points and so on…
The derivation of the word carat is most interesting – Revolutionary Indian diamond traders in the 17th century used the locally-available carob seed as a comparison when assessing the weight of the rough diamond. The carob seed on one side of the weighing scales and rough diamonds on the other. By a miraculous feat of nature the weight of a single carob seed was always 0.20 gramme. Following this the unit of weight for diamonds was established and the name ‘carob’ became ‘carat’.
A one carat diamond is almost 6 and a half mm in diameter, a half carat diamond is just over 5 mm in diameter and a quarter carat diamond is just over 4 mm in diameter. This is purely a guide as the diameter of the diamond in relation to the carat weight will depend on the final proportions and overall volume.
Cut
The cut of a diamond is the result of human craftsmanship. It refers to how well a diamond’s facets interact with light, influencing its sparkle and scintillation. The precision of a diamond’s cut affects how light is reflected and refracted within the stone, ultimately determining its brightness and beauty. A well-cut diamond will appear more dazzling and luminous.
Ideal
Excellent
Very Good
Reflects and disperses most of the light that enters the diamond, creating very good brilliance and fire. The proportions and symmetry are of a very high quality so that only a very slight amount of light is refracted through the sides (crown) and bottom (pavillion) of the diamond. Diamonds of this cut offer you a very good combination of value for money and very high quality.
Good
Reflects and disperses much of the light that enters the diamond. The proportions and symmetry fall outside of our premium cuts because the diamond cutter has chosen to create the largest diamond possible from the original rough crystal, rather than removing extra weight to produce a finer overall cut. Diamonds of this cut offer you a superb value for money without sacrificing the eternal beauty of the diamond.
Colour
The colour of a diamond refers to the presence or absence of colour within the stone. The most highly valued diamonds are those that are completely colourless, as they allow the most light to pass through and reflect back, enhancing their brilliance. Subtle differences in colour can significantly impact a diamond’s beauty, with colourless diamonds being exceptionally rare and highly sought after.
D & E / Exceptional white
Incredible whiteness and purity of colour that, in some cases, has a miraculous tint of incredible blue light. The absolutely finest quality of white diamonds and are extremely rare. For those who only want the absolute finest diamonds.
F & G / Rare white
Special whiteness and purity with no tint of colour (usually yellow or brown). A specialist trained eye could only tell the difference between exceptional white and rare white. Diamonds of this colour are very rare and offer you some of the very finest diamonds available anywhere.
H / White
Good white brightness with no tint of colour (usually yellow or brown). Diamonds of this colour are very rare and offer you an excellent combination of quality and value.
I & J / Slightly tinted white
Your diamond will have a slight tint of colour, usually yellow or brown. The level of colour is only noticeable when directly compared with white, rare white or exceptional white. Diamonds of this colour are more readily available, but offer superb value for money.
K & L / Tinted white
Your diamond will have a tint of colour, usually yellow or brown. The tint of colour is noticeable but a fine quality cut can still make the diamond look very special. Diamonds of this colour are more abundant, but offer superb value for money.
M - X / Tinted colour
Your diamond will have a strong tint of colour, usually yellow or brown, but not of the finest hue colour that would classify it as ‘fancy colour’. In most cases Icecool diamonds do not stock the lower spectrum of diamond colour quality.
Clarity
The clarity of a diamond refers to the presence of internal or external imperfections, known as inclusions and blemishes. These imperfections can affect a diamond’s overall appearance and brilliance. High-clarity diamonds, which have fewer and smaller imperfections, are more rare and valuable. Clarity is an important factor in assessing a diamond’s quality and appeal, as fewer inclusions and blemishes allow more light to pass through the stone, enhancing its sparkle.
IF / Internally flawless
Absolutely no internal imperfections in the diamond. The purist of the pure. Magical. Amazing. Unbelievable. The perfect gift from nature. For those who only want the absolute finest and rarest diamonds.
VVS1 / Very very small inclusions
Very few inclusions in the diamonds can be seen using magnification of 30X. Inclusions not visible to the naked eye. Diamonds of this clarity are very rare.
VVS2 / Very very small inclusions
Few inclusions in the diamonds can be seen using magnification of 30X. Inclusions not visible to the naked eye. Diamonds of this clarity are very rare.
VS1 / Very small inclusions
Very few inclusions in the diamonds can be seen using magnification of 10X. Inclusions not visible to the naked eye. Diamonds of this clarity are rare.
VS2 / Very small inclusions
Few inclusions in the diamonds can be seen using magnification of 10X. Inclusions not visible to the naked eye. Diamonds of this clarity are rare.
SI1 / Small Inclusions
Very few inclusions in the diamonds visible to the naked eye on very close inspection. Diamonds of this clarity are more available.
SI2 / Small Inclusions
Few inclusions in the diamonds visible to the naked eye on very close inspection. Diamonds of this clarity are more available.
I1 to I3 / Evident inclusions
Inclusions in the diamonds visible with the naked eye. In most cases Icecool diamonds do not stock these lower clarity qualities.
Story of Diamonds
How old are diamonds and where do they come from?
Where does the word 'diamond' originate from?
The word diamond comes from the Greek term ‘adamas’ which means unconquerable.
What does the word 'carat' mean?
The carat is the unit of weight for diamonds. A carat weighs 0.20 of a gramme and is divided into 100 points, therefore a three-quarter carat diamond is 75 points, a half carat diamond is 50 points and a quarter carat diamond is 25 points and so on …
The derivation of the word carat is most interesting – Revolutionary Indian diamond traders in the 17th century used the locally-available carob seed as a comparison when assessing the weight of the rough diamond. The carob seed on one side of the weighing scales and rough diamonds on the other. By a miraculous feat of nature the weight of a single carob seed was always 0.20 gramme. Following this the unit of weight for diamonds was established and the name ‘carob’ became ‘carat’.