Industrial diamonds can appear cloudy and gray, because of their flaws and inclusions.
About 75% of all diamonds mined are used for industrial purposes: they are not gemstone quality.
Artificial?
Seventy-five percent of diamonds that are mined are used in industry. These diamonds are not gem-quality stones, and appear cloudy, even milky because of their flaws and inclusions. 'Black diamonds', properly Carbonado, are gem-quality stones. You can read more, below, and depending on whether you want to employ your 'black industrial diamond' as a gem stone or as an industrial tool, you can pay accordingly.
Diamond is the hardest mineral known, so industries employ diamonds to enhance cutting and precision tools.
Industrial grade diamonds are disposable, since they do wear out -- slowly -- but they do wear. According to the 2003 publication by Donald Olsen, et al (link, below): "Natural industrial diamond...price varies from about $0.30 per carat for bort-size material to about $7 to $10 per carat for most stones, with some larger stones selling for up to $200 per carat."
Industrial diamonds come from diamond mines, in fact about 75% of all diamonds mined are industrial diamonds.
Industrial diamonds are formed at the same time and in the same places as gem-quality diamonds. Industrial diamonds represent about 80% of all diamonds mined.
You may be thinking of gem-quality and industrial diamonds. About 80% of all diamonds mined are industrial diamonds.
You may be thinking of gemstones and industrial diamonds. Gemstones represent about 20% of all diamonds mined, and the remainder is industrial diamonds.
These diamonds are industrial diamonds. About 80% of all diamonds mined are classified as industrial diamonds, leaving only about 20% to be graded as gemstones.
Raw diamonds are found in the earth; cut and polished diamonds are available in jewelery stores; industrial diamonds can be purchased from an industrial diamond broker.
The most common use of diamonds is for industrial tools, because industrial diamonds are the most common diamonds.
Yes, most diamonds mined -- about 80% -- are industrial diamonds that are only used in tools. Industrial diamonds improve precision, durability, and use.
About 75% of all diamonds mined are used for industrial purposes: they are not gemstone quality.
Diamonds from any source are used about 75% of the time for industrial purposes.
Most industrial diamonds and other gems are called synthetic
Eighty percent of all diamonds mined are used as industrial diamonds, to improve the cutting and precision of industrial tools.