Lab-grown diamonds of various colors grown by the high-pressure-and-temperature technique
Lab-grown diamond (LGD;[1] also called laboratory-grown, laboratory-created, man-made, artisan-created, artificial, synthetic, or cultured diamond) is diamond that is produced in a controlled technological process (in contrast to naturally formed diamond, which is created through geological processes and obtained by mining). Unlike diamond simulants (imitations of diamond made of superficially similar non-diamond materials), synthetic diamonds are composed of the same material as naturally formed diamonds—pure carbon crystallized in an isotropic 3D form—and share identical chemical and physical properties.
Numerous claims of diamond synthesis were reported between 1879 and 1928; most of these attempts were carefully analyzed but none was confirmed. In the 1940s, systematic research of diamond creation began in the United States, Sweden and the Soviet Union, which culminated in the first reproducible synthesis in 1953. Further research activity yielded the discoveries of high pressure high temperature diamond (HPHT) and CVD diamond, named for their production method (high-pressure high-temperature and chemical vapor deposition, respectively). These two processes still dominate synthetic diamond production. A third method in which nanometer-sized diamond grains are created in a detonation of carbon-containing explosives, known as detonation synthesis, entered the market in the late 1990s. A fourth method, treating graphite with high-power ultrasound, has been demonstrated in the laboratory, but as of 2008 had no commercial application.
Synthetic diamonds, which have a different shade due to the different content of nitrogen impurities. Yellow diamonds are obtained with a higher nitrogen content in the carbon lattice, and transparent diamonds come only from pure carbon. The smallest yellow diamond size is around 0,3 mm
The properties of synthetic diamonds depend on the manufacturing process. Some have properties such as hardness, thermal conductivity and electron mobility that are superior to those of most naturally formed diamonds. Synthetic diamond is widely used in abrasives, in cutting and polishing tools and in heat sinks. Electronic applications of synthetic diamond are being developed, including high-power switches at power stations, high-frequency field-effect transistors and light-emitting diodes. Synthetic diamond detectors of ultraviolet (UV) light or high-energy particles are used at high-energy research facilities and are available commercially. Due to its unique combination of thermal and chemical stability, low thermal expansion and high optical transparency in a wide spectral range, synthetic diamond is becoming the most popular material for optical windows in high-power CO 2 lasers and gyrotrons. It is estimated that 98% of industrial-grade diamond demand is supplied with synthetic diamonds.[2]
Both CVD and HPHT diamonds can be cut into gems and various colors can be produced: clear white, yellow, brown, blue, green and orange. The advent of synthetic gems on the market created major concerns in the diamond trading business, as a result of which special spectroscopic devices and techniques have been developed to distinguish synthetic and natural diamonds.
^Fisher, Alice (October 1, 2022). "Lab-grown diamonds: girl's best friend or cut-price sparklers?". The Guardian. Archived from the original on October 1, 2022. Retrieved October 1, 2022.
^Zimnisky, Paul (January 22, 2013). "The state of 2013 global rough diamond supply". Resource Investor. Archived from the original on January 28, 2013. Retrieved February 4, 2013.
Lab-grown diamond (LGD; also called laboratory-grown, laboratory-created, man-made, artisan-created, artificial, synthetic, or cultured diamond) is diamond that...
Imitation diamonds can also be made out of materials such as cubic zirconia and silicon carbide. Natural, synthetic, and imitation diamonds are most commonly...
Syntheticdiamonds are produced via high pressure, high temperature (HPHT) or chemical vapor deposition (CVD) technology. These diamonds have numerous...
distinct from syntheticdiamonds, which are actual diamonds exhibiting the same material properties as natural diamonds. Enhanced diamonds are also excluded...
(type Ib); the rare canary diamonds belong to this type, which represents only ~0.1% of known natural diamonds. Syntheticdiamond containing nitrogen is usually...
Blue Diamond is a member of the Great Diamond Authority in the TV show Steven Universe. The Hope Diamond The Hope Diamond without lighting Synthetic blue...
visual likeness to diamond, synthetic cubic zirconia has remained the most gemologically and economically important competitor for diamonds since commercial...
proposes an analogy with simulated diamonds and syntheticdiamonds—only the syntheticdiamond is truly a diamond. Synthetic means that which is produced by...
Synthetic population (biology) Synthetic fuel Synthetic oil Synthetic marijuana SyntheticdiamondSynthetic fibers, cloth or other material made from other...
than natural diamond. Historically, it was thought that syntheticdiamond should be structurally perfect to be useful. This is because diamond was mainly...
composed of zirconium oxide, synthetic moissanite, and uncolored, synthetic corundum or spinels; all of which are diamond simulants. The simulants imitate...
physical chemist and one of the early pioneers in the research of syntheticdiamonds, using a press of his own design. Howard Tracy Hall was born in Ogden...
(Gemological Institute of America) to issue a specific SyntheticDiamond Grading Report, which identifies a diamond as laboratory-grown and laser-inscribes it with...
for use in precise cuttings. Vacuum brazed diamond saw blades are manufactured by brazing syntheticdiamond particles to the outside edge of the circular...
A red diamond is a diamond which displays red color and exhibits the same mineral properties as colorless diamonds. Red diamonds are commonly known as...
Diamond color Diamond cutting Diamond enhancement Diamond simulant Famous diamonds Material properties of diamond Princess cut Syntheticdiamond "Expedition...
fingerprints. In addition, as syntheticdiamond technology improves and distinguishing between natural and syntheticdiamonds becomes more difficult, inclusions...
concentration; it can also distinguish natural from synthetic or enhanced diamonds. There is a tradition in diamond spectroscopy to label a defect-induced spectrum...
diamonds belong to this type, which represents only 10% of known natural diamonds. Syntheticdiamond containing nitrogen is Type Ib. Type I diamonds absorb...
into solid diamond products. There is growing interest in the conversion of sequestered atmospheric carbon dioxide into syntheticdiamond, a process pioneered...
Element Six is a company specialised in providing syntheticdiamond, cubic boron nitride and other superhard materials for industrial use. Part of the...
production of syntheticdiamond, future applications are beginning to become feasible. Garnering much excitement is the possible use of diamond as a semiconductor...
Scio Diamond Technology Corporation was a syntheticdiamond manufacturer that produced near flawless single-crystal diamonds for gemstone and industrial...
chemical vapor deposition (CVD) for the production of their gem-sized syntheticdiamond crystals, and obtained several U.S. patents on the process. The company's...
privately held company located in New York City. The company grew syntheticdiamonds using proprietary technology. Gemesis had the world's largest facilities...
rotary transfers) equipped with natural or syntheticdiamond-tipped tool bits. The term single-point diamond turning (SPDT) is sometimes applied, although...
linked by covalent bonds. The first such material was boron-doped syntheticdiamond grown by the high-pressure high-temperature (HPHT) method. The discovery...
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