Did you know that no two diamonds are the same?
The cut of a diamond can be the difference between one which is dull and another which you'll never forget.
It's made cut the most important of the Four Cs because it affects the way the diamond interacts with light to create that sparkle and brilliance.
But, how do you choose the right cut? what's the difference between cut and shape? How are they graded?
In this guide, you'll learn about all of that and more!
So, what happens when a diamond is found and what's the journey it takes before it's in the shop window?
So, a diamond is found in its rough form but once it's cleaned, it will then be analysed to see what the best cut is.
The goal? To identify the cut that will produce either the highest quality diamond(s) or the biggest diamond from that rough stone.
Once the decision is made, the rough diamond is marked to indicate the areas which need cutting.
The cut of a diamond refers to the quality of its proportions, symmetry and polish.
The higher quality the cut, the more light can be emitted from the diamond. There's a diamond cut chart which helps to illustrates this.
In this diamond cutting chart, you'll learn how different cutting techniques can influence how light interacts with a diamond.
Image Via - Livia Diamonds
From the diamond cut chart, you can see how an ideal cut diamond can emit the most light.
It creates that brilliance, scintillation and fire which brings a diamond to life for the viewer but, what are they?
Now that you know the different ways a diamond can be cut to maximise their potential, what shapes can they be?
What is diamond shape?
The diamond's shape refers to the outline of the diamond.
That is to say, a diamond's shape could be round, princess, emerald, Heart, Marquise and more. Check out this diamond shape chart which shows different diamond shapes.
Image via - Bicknells
Hatton Garden are a world renowned jewellery centre in the UK and they revealed that the round brilliant diamond is the most popular diamond shape.
To determine the quality of the cut, they can be graded with charts from leading authorities such as GIA and AGS to determine their quality.
The Gemological Institute of America (GIA) is a worldwide authority on diamonds and created a chart to certify the cut quality of diamonds.
Starting from Excellent, it's a sliding scale which ends at poor.
It must be noted that the American Gem Society use ideal as their highest grade.
When you break down a diamond, it contains different aspects:
Now that you know the parts of a diamond, you can increase your understanding with percentages and ratios used to describe various aspects of them.
These percentages concern the table, depth and width of the diamond.
To determine the table %, divide the width of the table's surface area with by the width of the diamond (also called the diameter).
For example, a 3.5mm table and 6mm width equals a table of 58.3%.
If the percentage is too big, light won’t reflect off the diamond’s facets. If the percentage is too low, light stays trapped inside the diamond and escape elsewhere.
The depth percentage is measured by dividing the depth (or height) by the width of the diamond. This percentage can give an early indication of how well the diamond interacts with light.
For example, if a diamond has a depth of 6mm and a width of 8mm, the depth percentage is 75%.
To create the best relationship between depth and light, it depends on the diamond shape and how well the facets are proportioned.
This ratio helps to explain how proportionate the diamond is.
The higher the ratio, the more elongated and the lower the ratio, the more square or short it is.
Don't worry! There's a standard range for each diamond shape.
Diamonds are truly worth a thousand words.
A fascinating marvel. The fire, sparkle, brilliance or shape - the way light transforms a diamond is incredible and further strengthens our bond with these beautiful stones.
The precision and quality of a diamond’s cut, namely its proportions and symmetry, greatly impact a diamond’s beauty and price.
Now that you have a greater understanding of cut, you can explore further into The Four Cs and become your own diamond expert!
If you want to explore our collection of diamonds and luxury jewellery then check out our catalogues!
Next in the series is clarity which you can read by clicking the button below!