What does diamond mean on your watch

Treated diamonds

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What is treated diamonds?

Treated diamonds are all diamonds that have not been retained in their natural appearance, but have been treated to improve their clarity and / or color. Only those diamonds that have been created exclusively by nature and then processed by polishing and grinding are considered untreated diamonds. If treated diamonds are sold, they must be explicitly identified as such. Sometimes the term “brilliance-enhanced” diamonds is also used.

How high is the quality of the treated diamonds?

Serious diamond dealers only offer treated diamonds in exceptional cases; customers usually have to ask for them explicitly. The reason for this: The treatment robs the gemstones of their natural properties and of their own charm. Treated diamonds are therefore not of the same quality as untreated diamonds and are accordingly offered cheaper.

How are diamonds treated?

There are many options for treating diamonds. If the color of the gemstone is to be improved, heat treatment is an option. A distinction must be made between two variants: In the first, color is introduced into the diamond from the outside, in the second, on the other hand, colors are already present in the stone and should be brought out more strongly by the heat treatment.

The so-called HPHT procedure can also be used. In this process, the diamonds are heated to temperatures between 2,300 and 2,500 degrees Celsius. This creates a pressure of around 65 kbar. The diamonds are supposed to be discolored with it. The HPHT process is mainly used for brown diamonds, although other diamonds can also be treated with it.

Another form of treatments for diamonds is laser treatment. This can be used to remove small inclusions in the diamond. The laser treatment is used to improve the purity of the diamond. However, this improvement in purity also includes other processes. For example, resins, waxes or oils can be incorporated into the diamond. It is important that the substances are colorless. They are inserted directly into the cracks and cavities and are intended to increase the purity.