Diamonds are divided into types according to the presence or absence of nitrogen and boron in a crystalline grid and the method of nitrogen arrangement.
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Type Ia Type IAA is the most common type of natural diamonds, contains nitrogen. So far, the determination of a colorless diamond as a type IAA is a confirmation of its natural origin. Type IAB - very rare. Devices for separation of diamond types will determine these diamonds for further research |
Type ib Very rare type of natural diamonds, nitrogen is scattered in the grid. HPHT adjustment can change color to pink or red. |
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Type IIA It does not contain nitrogen or boron. Very rare, contain almost no dirt. They can be synthetically produced by HPHT and CVD methods. HPHT adjustment can remove brown color and create colorless or pink diamonds |
Type iib It does not contain nitrogen, but contains boron. Blue to gray diamonds due to the presence of boron instead of nitrogen. They can be synthetically produced by HPHT and CVD methods - they are usually blue. Are an electric conductor due to the boron content |
Presidium type separator
More manufacturers already offer a diamond -type identification device. Synthetic Diamond Screener from Presidium is one of them. It is unable to identify a synthetic diamond, but only to reference to further subsequent analysis.
