Other Uses of Colored Diamonds
Although most people think only of the white or clear stones when they think of diamonds, the gems come in a large variety of colors.
The clear diamonds are the most popular and one of the less expensive forms of the jewel.
Other colors
The other colors, some of which are rare, also provide beautiful settings.
The most common diamond, the white diamond, typically is judged on the absence of color in the stone. If a jeweler holds the stone to examine it under a magnifying lens, he or she expects to see nothing inside the diamond. Color in a white diamond comes from air bubbles and impurities in the gem, but you can see through a pure white diamond.
Black diamonds
In other diamonds, though, the splashes of color make them intriguing and more expensive. Black diamonds, also called carbonados, are one of the examples of a colored diamond. The black diamonds came from the geologic squeezing of carbon atoms less than a billion years ago. These carbon atoms, under pressure until they became diamonds, came to the surface in volcanoes.
How rare?
Black diamonds are not very rare, at least not in comparison to other colored diamonds. Black diamonds are brilliant and beautiful, however, and the DeBeers company, which owns most of the black diamond mines in the world, recognized this fact. DeBeers presents the black diamond as a rare stone by controlling the number of these diamonds they make available to the public.
Most industrial diamonds are used as abrasives but small amounts of diamond are used in other applications.
Diamond windows
are made from thin diamond membranes and used to cover openings in lasers, x-ray machines and vacuum chambers. They are transparent, very durable and resistant to heat and abrasion.
Diamond speaker domes
enhance the performance of high quality speakers. Diamond is a very stiff material and when made into a thin dome it can vibrate rapidly without the deformation that would degrade sound quality.
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