Be careful... What is Synthetic Diamond
Synthetic diamonds (also known as artificial diamonds, cultured diamonds, or processed diamonds) are Diamonds produced in an artificial process, in contrast to natural diamonds, created by geological processes. Synthetic diamonds are also widely known as HPHT diamonds or CVD diamonds after two general production methods (referring to the high pressure high pressure crystal formulation method and chemical vapor formation method). While the term synthetic is associated with consumers with imitation products, artificial diamonds are made of the same material (pure carbon, crystallized in 3D isotropic form). In the U.S., the Federal Trade Commission has indicated that alternative terms developed by the laboratory, made by the laboratory, and created "will more clearly communicate the nature of the stone".
A number of claims for diamond synthesis were documented between 1879 and 1928; Most of these efforts were carefully analyzed but none were confirmed. In the 1940s, systematic research began in the United States, Sweden and the Soviet Union to plant diamonds using CVD and HPHT processes. The first reproductive synthesis was reported around 1953. Both processes still dominated the production of synthetic diamonds. The third method, known as detonation synthesis, entered the Diamond market in the late 1990s. In this process, nanometer-sized diamonds are made in blasting carbon-containing explosives. The fourth method, treating graphite with high-power ultrasound, has been shown in the laboratory, but currently does not have commercial applications.
Synthetic diamonds are diamonds produced in the laboratory, in contrast to Diamonds mined from Earth. The use of diamonds from gems and industry has created a huge demand for rough stones. This demand has been largely satisfied by synthetic diamonds, which have been produced by various processes for more than half a century. However, in recent years it has been possible to produce gem-quality synthetic diamonds of significant size. It is possible to make colorless synthetic gemstones which, at the molecular level, are identical to natural and visually similar stones so that only a gemologist with special equipment can distinguish them.
The majority of commercially available synthetic diamonds are yellow and are produced by high-temperature high pressure (HPHT) processes. The yellow color is caused by nitrogen impurities. Other colors can also be reproduced like blue, green or pink, which is the result of adding boron or from irradiation after synthesis.
Another popular way to plant synthetic diamonds is chemical vapor deposition (CVD). Growth occurs under low pressure (under atmospheric pressure). This involves eating a gas mixture (usually 1 to 99 methane with hydrogen) into space and splitting them for active chemical radicals in the plasma ignited by a microwave oven, hot filament, arc discharge, welding torch or laser. This method is widely used for coatings, but can also produce one crystal several millimeters in size (see picture).
In 2010, almost all 5,000 million carats (1,000 tons) of synthetic diamonds produced per year were for industrial use. About 50% of 133 million carats of natural diamonds are mined per year in industrial use. Mining companies cost an average of $ 40 to $ 60 per carat for natural colored diamonds, while synthetic producers cost an average of $ 2,500 per carat for synthetic, gem-quality colored diamonds. However, a buyer is more likely to face synthetic when looking for fancy colored diamonds because almost all luxury synthetic diamonds are colored, while only 0.01% of natural diamonds.
Synthetic diamonds are diamonds produced in the laboratory, in contrast to Diamonds mined from Earth. The use of diamonds from gems and industry has created a huge demand for rough stones. This demand has been largely satisfied by synthetic diamonds, which have been produced by various processes for more than half a century. However, in recent years it has been possible to produce gem-quality synthetic diamonds of significant size. It is possible to make colorless synthetic gemstones which, at the molecular level, are identical to natural and visually similar stones so that only a gemologist with special equipment can distinguish them.
The majority of commercially available synthetic diamonds are yellow and are produced by high-temperature high pressure (HPHT) processes. The yellow color is caused by nitrogen impurities. Other colors can also be reproduced like blue, green or pink, which is the result of adding boron or from irradiation after synthesis.
Another popular way to plant synthetic diamonds is chemical vapor deposition (CVD). Growth occurs under low pressure (under atmospheric pressure). This involves eating a gas mixture (usually 1 to 99 methane with hydrogen) into space and splitting them for active chemical radicals in the plasma ignited by a microwave oven, hot filament, arc discharge, welding torch or laser. This method is widely used for coatings, but can also produce one crystal several millimeters in size (see picture).
In 2010, almost all 5,000 million carats (1,000 tons) of synthetic diamonds produced per year were for industrial use. About 50% of 133 million carats of natural diamonds are mined per year in industrial use. Mining companies cost an average of $ 40 to $ 60 per carat for natural colored diamonds, while synthetic producers cost an average of $ 2,500 per carat for synthetic, gem-quality colored diamonds. However, a buyer is more likely to face synthetic when looking for fancy colored diamonds because almost all luxury synthetic diamonds are colored, while only 0.01% of natural diamonds.
