There are some respectable diamond growing laboratories that you can find information about on this resource: Gemesis, The New Age Diamonds, Chatham and now there is a decent addition to this list known as Centaurus Diamond Technology. However, unlike three previous companies Centaurus are more focused on growing diamonds for industrial needs than on satisfying personal needs of jewelry lovers. Yet the diamonds created there are real and GIA approved, so if one day they decide to make high-quality diamonds for jewelry and you see Centaurus diamonds in shop windows be sure they are real diamonds. Here is some information about Centaurus Diamond Technology, the methods they use and the quality they offer:
MAKING A DIAMOND Diamonds are made of carbon, the purer the carbon the better for the manufacture of cultured product. Natural diamonds are a crystal, which grows deep underground, usually in close proximity to volcanoes. How Diamonds are formed is similar to growing any other crystal, but Diamonds require tremendous temperatures and pressures to grow in Nature. Most Diamonds come up from very deep within the earth, carried by the lava flows from volcanoes.
Diamonds can also be made in factories by squeezing Carbon in massive presses at high temperature and pressure (HPHT). Manufactured Diamonds have great utility in industrial tools and as abrasives.
HIGH PRESSURE HIGH TEMPERATURE AND CVD There are several ways to make artificial Diamond product. The two main methods are High Pressure and High Temperature (BARS method).
The HPHT method is the one used by almost all synthetic diamond producers today (both for gem use and industrial use). This process artificially recreates how diamonds are created within the body of our planet. A diamond ‘seed’ serves as the growth template, and then a carbon source, with a catalyst, is added to enhance growth.
Once a crystal is established, the original ‘seed’ Diamond is removed, and what remains is an artificial Diamond.
CVD, employs EXREMELY LOW PRESSURE AND HIGH TEMPERATURE (also known as CVD), and is used for coating things with diamond. There remain substantial challenges to realizing commercial growth levels against achieving larger single Diamonds using this method. A diamond seed is again employed. The carbon growth medium is supplied in gaseous molecular form. The carbon floods onto the diamond seed and growth ensues.
Synthetic Diamonds draw impurities from their surroundings, universally and rapaciously . This gives them varying color and attractiveness. To grow pure whites is a daunting task – to be discussed in our associated blog.
About Centaurus Diamond Technologies, Inc. Centaurus Diamond Technologies Inc. was established to fully commercialize its proprietary, cost-efficient and high-volume diamond production method to provide industrial quality diamonds. The Company’s patented technology enables the production of “cultured” diamonds that are chemically, atomically, and structurally identical to natural diamonds. The gemological Institute of America has tested the Company’s “cultured” diamonds and has confirmed they are diamonds according to their testing protocols.
The information is taken from http://www.marketwatch.com/story/centaurus-diamond-technologies-inc-how-diamonds-are-made-not-born-2012-07-10