Laboratory CVD diamonds

Firework!
In order to understand my love for Salt and Pepper diamonds, you need to know that stores are full of laboratory-grade diamonds. In addition, in Russia the market for laboratory diamonds is practically not regulated in any way, for example, sellers have no obligation to declare the nature of the origin of stones. Therefore, I strongly recommend that you require certificates for large diamonds, the tag on the product is not an analogue of the certificate, if the word "natural" is not written on it!

Another thing is Salt and Pepper diamonds, their price is not worth the efforts of the “bad guys”, laboratory diamonds are always metallic, which makes it easy to distinguish them from natural stones. I will say more, it is by inclusions that gemologists distinguish natural diamonds from laboratory ones.


What is a laboratory diamond?

There are two ways to produce such stones, today I will talk about the method of vapor deposition (CVD)
 

First produced about ten years ago, CVD diamonds are relatively new to the jewelry market. As the name suggests, carbon-based gases are heated to extremely high temperatures inside a CVD machine until the molecules decay, releasing carbon atoms. These atoms rain down on the diamond substrate at the bottom of the machine, piling up on top of each other like snowflakes, forming layers of diamond. Many of the early CVD diamonds were black or brown, but scientists found that colorless diamonds could be created by changing gases in a machine and treating gases at high temperatures and high pressures. Today, it can be very difficult to tell the difference between a natural diamond and a CVD diamond.
Diamonds created using this technology are completely identical to natural ones!