What Are Color-Treated Diamonds?

Few people know that to achieve perfect beauty, diamonds must undergo an elaborate treatment process. Color-treated diamonds help eliminate the imperfections of natural stones. Join Jemmia to learn about the characteristics and methods of diamond treatment in the article below.

Color-treated diamonds

Natural diamonds, when first mined, have a rough exterior along with many flaws. Modern processing techniques help make the stone glossy, beautiful, and reach its highest value.

Figure 1: Color treatment is commonly applied in diamond processing

What are color-treated diamonds?

The color of a diamond is created by optical centers that selectively absorb regions of light from the electromagnetic spectrum. Treatment technology is applied to renew or remove unwanted color centers. Depending on the defects of the material and the optical color centers, different colors can be created.

Most diamonds traded on the market have been treated to help the stone maintain color stability, reduce yellow tint, and improve clarity. Thanks to scientific advances, multiple treatment techniques can now also be combined to create unique color tones. In addition to the familiar colors of red and pink, many new diamond colors have also appeared on the market.

Methods of diamond color treatment

Diamond color treatment techniques mainly apply the following two methods:

• The irradiation treatment method for diamonds has been applied since 1950. Based on the defect configuration of the host diamond, suitable radiation rays are used. This aims to create a series of more impressive new color tones such as pink, yellow, orange, red… However, this method can only create color for colored diamonds and cannot remove the previous color.
• The HTHP method is carried out under high temperature and pressure. This technique has been applied in diamond processing since 1990. The main effect of HTHP is to remove brown color and release boron to create other optical color centers. It can effectively improve the original color of the stone. In addition, this technology also helps make diamond color more brilliant.

Figure 2: Color treatment methods help diamonds achieve perfect beauty

Previously, the two treatment methods above were carried out separately. Recently, irradiation treatment and HTHP have been combined to create unusual-colored diamonds that cannot be obtained through separate processes.

Other diamond treatment methods

Color-treated diamonds are also subject to several measures to improve quality. This helps the stone achieve the highest value and meet the requirements of high-end jewelry crafting.

Treatment to improve diamond clarity

Laser drilling is a method commonly used to remove impurities in diamonds. Using sophisticated techniques, a tiny hole is drilled to burn away the inclusions inside. Or a bleaching agent is introduced to improve brightness and increase the diamond's aesthetic appeal.

The laser drilling method is performed delicately so as not to damage the stone. This technique is used very often in the processing process, creating high-quality products that fully express the luxurious and classy beauty of natural diamonds.

Figure 3: Removing impurities helps natural diamonds achieve high purity

Diamond filling method

Color-treated diamonds cannot erase the cracks inherently present in natural stones. Therefore, crack treatment is an extremely important stage in removing defects.

A solution similar to melted glass is applied over the crack to conceal the grooves and improve the clarity of the gemstone. However, this method also causes mixed opinions because it accelerates deterioration and reduces the durability of the product.

Figure 4: Diamond cracks will be removed thanks to the coating layer

The article helps readers better understand what color-treated diamonds are. Thereby, you will gain certain knowledge in choosing and using diamonds. And don’t forget to follow Jemmia’s homepage to update the latest information about the gemstone market.

JEMMIA DIAMOND is a diamond expert, a company 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, guaranteed quality, global prestige, and worldwide value.

The price of GIA diamonds at Jemmia is the most competitive on the market, along with an attractive buyback and exchange policy, so come to JEMMIA DIAMOND today. We believe that our team of experienced consulting experts will help you choose the diamond that satisfies you.

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– 100% are new, unused diamonds. Because Jemmia Diamond always wishes to bring happiness, good luck, and the greatest value to customers by selling new, unused diamonds.

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