Answered: How are Diamonds Cut?

Answered: How are Diamonds Cut?

19th October 2020

As the hardest substance on earth, cutting a diamond takes a little bit of skill. With new technological developments, the way we’re growing and cutting diamonds continues to evolve for the better. Here at Sacet, expert cutting is about symmetry, proportions and polish. Without an expert cut, your diamonds won’t reach those dazzling heights of quality. Want to get into the details? Here’s a rundown of how diamonds are cut for our beautiful jewellery.

It’s worth pointing out that the laboratory grown diamonds that we fuse into our pieces are identical in chemical structure and appearance to mined diamonds. Imitating the natural processes in the earth’s mantle means lab-grown diamonds retain an identical carbon structure, which gives them their distinct hardness. So, if diamonds are the strongest material on the planet, what could be used to cut them? The answer: diamonds. Have a look through the step-by-step process below -


After a check-up with a diamond cutter, the decision is made about which cut is suitable for the rough diamond. Whether that’s a step-cut or a brilliant cut, the process alters slightly.


As the name suggests, this step separates the diamond into multiple pieces. This is done either using saws or advanced lasers to ensure the quality of the diamond is not affected.


With the pieces of diamond separated, the diamond expert will transform them into round stones using a spinning axle. The two pieces of diamond then grind together to create a rough finish.


Now that there is a distinct, rough finish on the rounded diamond, it’s time for the polishing phase. The first stage of the polishing process is called blocking, where all the facets, crowns and culets are formed. Now that we have the base of our diamond, the second stage is brillianteering, which adds any remaining facets and imbues the diamond with its brilliance. 


While this is a separate inspection to the grading process, it’s still a very important part of the cutting stage. The inspection ensures that the diamonds meet all specifications requested while keeping the standards from slipping.

The positioning of facets has a huge impact on how much light enters the diamond and how much is reflected. Optimising symmetry, proportions and polish are all at the very heart of the cutting process. You can discover the dazzling cuts of our lab-grown diamonds by browsing our online selection today.

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