What is Diamond Cut Ratio? Is it Important?

Diamond cutting proportions have a great impact on the value of a diamond. So what is diamond cutting? Are cutting proportions really as important as you think? How does this process take place? Jemmia will answer all in this article.

Does diamond cutting proportion matter?

Each rough diamond mined from nature doesn't sparkle like the ones we see in diamond engagement rings or women's diamond rings displayed in stores. They must undergo a meticulous and precise cutting and polishing process to become more perfect.

It's not simply a round, square, or heart-shaped cut, but the standard diamond cutting proportion is to make the gemstone capable of refracting light in the most sparkling and natural way.

Figure 1: The art of diamond cutting

What is diamond cutting?

Natural diamond cutting is the process of transforming a rough diamond into a specific shape to be eligible for crafting into jewelry such as diamond stud earrings, diamond pendants, or men's gold diamond rings for men.

Typically, this process is carried out by gemstone experts such as master craftsmen. At the same time, they must be equipped with all the necessary tools and equipment to perform the work.

Diamonds can be cut and polished thanks to their structural characteristics, arranged according to a specific physical and chemical structure. Craftsmen then shape the gemstones as desired, making their facets shiny and smooth.

Does diamond cutting proportion matter?

A rough diamond, if not cut and polished, would be no different from a piece of crystal. However, when cut and polished, it will display many beams of light and become brilliant.

When the diamond cutting proportion is perfect, light is refracted and reflected off the surface. Thanks to this, the diamond will become brighter and more sparkling. However, if the cut is too shallow, light will not be able to escape through the bottom. If the cut is too deep, light will escape through the sides.

Therefore, the quality of the cut is the most important criterion for evaluating the perfection of a diamond. The more perfect the cut quality, the higher the value of the diamond.

A diamond is considered perfect when its facets are symmetrically intertwined. In addition, the diamond cutting proportions must be truly accurate and meticulously polished.

Therefore, when choosing diamond rings or white gold wedding rings with diamonds, many people prioritize diamonds with a cut quality of "Very Good" or higher to ensure natural brilliance and sparkle.

How is the diamond cutting process carried out?

In its original crystalline form, diamonds look very ordinary and varied due to many allotropes. Besides, they don't have the sparkle we usually see in jewelry stores. However, their beauty is truly revealed after undergoing the cutting and polishing process.

Perfect cuts create quality and valuable facets, bringing true quality to each facet.

Classification of rough diamonds

Rough diamonds are diamonds found in nature. When first mined, they usually have no clear shape. Only after processing and crafting do their shapes become truly perfect and eye-catching.

The first step in the process is to divide the diamond cutting proportions into smaller parts. The purpose is to make processing easier.

Figure 2: Rough diamond has a clear shape after cutting and polishing

Create a 3D drawing of the diamond and design the cutting diagram

The use of laser scanning technology allows us to see many internal characteristics of a diamond. The external geometric shape of the diamond is then converted into a 3D model.

Next is to design the diamond cutting diagram. In this stage, the craftsman will decide the final shape of the diamond and estimate its weight.

Diamond splitting

Before processing the diamond, experts will measure it again to determine the diamond cutting proportions, as well as the cutting and splitting positions. Currently, this step is performed by Laser sawing technology.

Figure 3: The diamond splitting process is performed by Laser sawing technology

Rounding stage

This is the process where two diamonds are placed on rotating shafts in opposite directions. Then, the craftsman will operate the machine to rub them and make them round. Each diamond will undergo this stage before grinding and polishing.

We hope that after reading the article shared by Jemmia, you will better understand the importance of diamond cutting proportions, as well as how the process is carried out.

Jemmia Diamond – A reputable diamond purchasing address

Jemmia is a diamond expert, authorized by the Gemological Institute of America (GIA) to import and distribute genuine GIA certified diamonds. Therefore, diamonds purchased at Jemmia always have clear origins, are guaranteed in quality, have global credibility, and possess worldwide value.

Jemmia publicly displays diamond price lists clearly. Diamonds with GIA certification have transparent origins and value, ensuring customers can choose with peace of mind.