Fancy colours found in rare natural diamonds evolve entirely through natural, though unusual, processes.
With lab grown diamonds this process is different and varies between colour hues.
Certain colours, such as pinks and reds, can only be achieved by employing sophisticated post-growth treatments.
Yellow lab grown diamonds
The most prevalent colour within lab grown diamonds, yellow is created by the introduction of nitrogen atoms as the diamond is grown.
Nitrogen impurities absorb blue light, such that the diamond reflects a yellow hue. The degree of nitrogen concentration coupled with the specific growing process employed, determines the strength and saturation of the yellow displayed.
Green lab grown diamonds
To create the green colour the growing diamond is exposed to radiation in the form of electron beams.
This causes changes in the stone's crystal structure which produces the required hue.
Blue lab grown diamonds
Boron is introduced to the diamond during the growing process, which interacts with carbon atoms.
This causes the diamond to absorb red, green and yellow light while allowing blue light to be emitted.
Pink & red lab grown diamonds
Once a diamond has been grown with nitrogen impurities contained within it, subjecting it to radiation and extremely high temperatures creates the much sought after pink colouring.
This irradiating treatment is conducted post-growth to produce a range of pink hues ranging from faint to deep intense saturation.
Lab grown diamonds have the same chemical composition, crystal structure and optical properties as earth created diamonds. They are not diamond simulants.
Lab grown diamonds are less impactful to the environment than mined, earth created diamonds. They use significantly fewer resources and emit less air polution to create.
ARE THEY BETTER VALUE?
Lab grown diamonds offer fantastic value compared to mined, earth created diamonds of similar size and grade quality. Which means you will get a larger diamond for less.