Understanding Diamond Polish, Symmetry And Cut


Buying diamonds for the first time is such a great feeling. But do you know that there is more to diamond shopping than its look? To make sure you buy the finest of diamonds, it is essential to understand a thing or two about its grades. You must have also heard about diamonds’ cut, symmetry and polish. 

In this article, we are going to give you a quick guide that will help you understand what exactly is diamond polish, symmetry and cut while also informing you why they matter. Let us begin with their definitions: 

The Definition

  • Diamond’s Cut: 

As the name suggests, a diamond’s cut refers to its shape. Not just this, the cut also shows how effectively the diamond reflects light to the viewer’s eye. If a diamond is well cut, it will appear brilliant and fiery. On the other hand, if the cut is not up to the mark, the stone will rather look lifeless and dark. For the precise cut, you need excellent artistry and workmanship. They make sure that the cut is perfect and complements with the symmetry, polish to deliver a magnificent diamond. 

The cut grade also considers the design, weight relative to the diameter, girdle thickness, the symmetry and the quality of the polish. 

  • Diamond Polish: 

Once the diamond is cut in the desired shape, it is then given a finish to achieve a smooth and glass-like surface. This is what is known as diamond polish. Experts use 10X magnification to take a close look at the diamond to determine its polish rank. 

The magnification also helps in looking for any imperfection left behind by the cutter. Usually, polish marks are not visible to naked eye, especially when you look at single stone diamond ring designs. This is not the same with symmetry. Let us see how. 

  • Diamond Symmetry: 

Symmetry in a diamond refers to the arrangement, shape and size of the diamond’s facets. Here, facets are the flat planes that you see on the surfaces of the diamond. In short, symmetry tells you how perfect the diamond’s cut is. It is a subset of cut grade and is often achieved by the cutter to get the most accurate shapes. Any level of asymmetry in the diamond can negatively impact how the diamond reflects light and thus how it shines. 

The Effect of Diamond Cut, Symmetry, and Polish

After reading the definition, you would have got a faint idea of how the cut, symmetry and polish affects a diamond’s look. Each of these elements deeply impact the brilliance of the diamond. When the light strikes a diamond with “Very Good” and “Excellent” quality, the light gets reflected via every facet properly and the maximum amount of the light reflects back out of the crown of the diamond. This gives a scintillating effect and that is the brilliance of the diamond.  

To Sum Up

For thousands of years, diamonds have been loved by people all over the world. And that is why they are now no less than a treasure to possess. This is why whenever you check out designs of your favourite diamond jewellery, make sure you also pay attention to its cut, symmetry and polish. Along with that, also look at the famous 4 Cs (Colour, Clarity, Cut, and Carat) to determine the quality and value of the diamond. These will ensure you get only the best and perfect diamond for your timeless collection.

Ethan More
Ethan More
The possibilities are endless when you have a job that makes your heart sing.


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