This necklace features a simple gold chain with sparkling crystals. - Material: Gold - Stone: Crystal - Design: Simple chain necklace A synthetic diamond, also known as an artificial diamond, is a diamond created artificially using scientific technology, in contrast to natural diamonds formed within the Earth. They are primarily synthesized using High-Pressure High-Temperature (HPHT) methods or Chemical Vapor Deposition (CVD) methods. They are also called lab-grown diamonds. Diamonds synthesized using the HPHT method, exhibiting various colors. Attempts at synthesis were made between 1879 and 1928, but all failed. In the 1940s, the United States, Sweden, and the Soviet Union began systematic research on synthesis using CVD and HPHT methods, and the first reproducible synthesis method was announced around 1953. Currently, these two methods are mainly used for synthesis. Besides CVD and HPHT methods, a method for synthesizing nanodiamonds by detonation using explosives containing carbon elements was developed in the late 1990s. Furthermore, there is a cavitation method that uses high-power ultrasound to treat graphite, but it is not yet commercially utilized. The characteristics vary depending on the synthesis method, and they have properties superior to natural diamonds in terms of hardness, thermal and electrical conductivity, and electron mobility. For this reason, they are widely used in abrasives, cutting tools, and heat sinks. In addition, they are being used in high-voltage circuit breakers in power plants, high-frequency field-effect transistors, and light-emitting diodes. Those synthesized by HPHT and CVD methods are also used as gemstones. This is a matter of great concern to natural diamond trading companies, and various measures are being taken to distinguish them from natural diamonds, such as the development of spectrometers. Thank you for viewing.