CVD diamonds can indeed change color. This is achieved through various methods during their growth and post-growth treatments. The color changes in CVD diamonds are primarily controlled by the manipulation of the growth environment and the introduction of specific elements or treatments.
Can CVD Diamonds Change Color? Discover 4 Ways to Transform Their Hue
1. Color Manipulation During Growth
CVD diamonds can be made to exhibit different colors by adjusting the composition of the gases in the growth chamber.
For instance, adding boron can result in blue diamonds.
Nitrogen can lead to yellow diamonds.
These adjustments allow for the production of a range of fancy colored diamonds, including pink, blue, and yellow.
These fancy colored diamonds can be of high quality, as recognized by the GIA with classifications like Fancy Intense or Fancy.
2. Post-Growth Treatments
Most CVD diamonds initially come out of the growth chamber with brown or yellow colors.
To achieve a white or colorless appearance, these diamonds undergo heat treatment.
This process can also be used to create specific fancy colors like pink or red.
The treatment not only alters the color but can also mask certain identifying features of the diamonds, making it more challenging to distinguish them from natural diamonds.
3. Color Stability Over Time
Contrary to the ability to change colors during and after their growth, CVD diamonds do not change color over time under normal conditions.
They are designed to be as stable and resilient as natural diamonds, maintaining their color and other properties over the long term.
4. Versatility in Color Creation
CVD diamonds offer a versatile platform for creating a variety of colors through controlled growth processes and treatments.
This capability has expanded the market for lab-grown diamonds, providing a more affordable and customizable alternative to natural diamonds.
Continue exploring, consult our experts
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