06/11/2024
Blue diamonds are among the rarest and the most intriguing. They are formed when the chemical element boron gets trapped inside the diamond's crystal structure.
Boron absorbs yellow light and reflects blue light. Subtle fluctuations in the concentration and position of boron atoms create various shades of blue. Thanks to this chemical element, diamonds can conduct electric current (that is, become semiconductors).
GIA research has shown that natural blue diamonds are formed much deeper within the Earth than others. Up to four times deeper, in fact! We were lucky enough to unearth these gorgeous gems thanks to a process called subduction. Subduction occurs when tectonic plates move up and down like a conveyor belt over the course of millions of years, carrying blue diamonds closer and closer to the surface.
However, there are some exceptions even in science. The Argyle pipe in Australia was known to produce blue gems without any boron in their crystal lattices. Such diamonds are very often slightly grayish in color, due to hydrogen inclusions.
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