A synthetic diamond or laboratory-grown diamond (LGD), also called a lab-grown diamond, [1] laboratory-created, man-made, artisan-created, artificial, synthetic, or cultured diamond, is a diamond that is produced in a controlled technological process (in contrast to naturally formed diamond, which is created through geological processes and ...

2016年12月13日 · Synthetic diamonds are grown in laboratories and have essentially the same chemical composition, crystal structure and physical properties as natural diamonds. They’re real diamonds and not ‘fakes,’ but they are not the same as natural diamonds.

2025年1月8日 · Synthetic diamond, man-made diamond that is usually produced by subjecting graphite to very high temperatures and pressures. Synthetic diamond resembles natural diamond in most fundamental properties, such as extreme hardness, broad transparency, high thermal conductivity, and high electrical resistivity.

2024年12月11日 · With new technologies and sustainable practices, lab-grown diamonds are becoming an increasingly popular choice among jewelry shoppers. They’re chemically and physically identical to earth-mined...

合成鑽石 或稱 人造鑽石，即 技術 加工製成的 鑽石，與 地質作用 自然形成的天然鑽石相對。 合成鑽石分為 HPHT鑽石 和 CVD鑽石 兩種，分別表示它的加工方式：高溫高壓（H igh- P ressure H igh- T emperature）以及 化學氣相沉積 （C hemical V apor D eposition）。 只用肉眼視察觀察合成鑽石和天然鑽石，兩者並無什麼分別。 然而，由於它們形成和生長過程不同，當使用專業儀器的視察細看，或者在某些特定的環境下，仍能分辨到兩者差別。 [1]

Lab grown diamonds start as tiny carbon seeds from pre-existing diamonds. Two primary techniques are used to create lab diamonds: High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD). Both methods simulate part of the natural diamond-forming process, resulting in high-quality gemstones that match mined diamonds in every way.

2023年4月4日 · Synthetic or lab-grown diamonds are a smart alternative to natural diamonds for jewelry, plus they have many commercial uses. Both natural and lab-grown diamonds are crystals of pure carbon . In contrast, a diamond simulant (e.g., cubic zirconia , strontium titanate) is not carbon and lacks the chemical and physical properties of diamond.

2016年7月25日 · With the traditional diamond growth method, called high-pressure, high-temperature (HPHT), synthetic diamonds are produced from carbon material in apparatuses that mimic the high pressure, high temperature conditions of natural diamond formation in the earth.

2017年11月8日 · Presents a visual guide to the growth processes and major gemological spectroscopic features of synthetic diamonds.

2013年2月4日 · Today, nearly 60 years after that achievement, synthetic diamonds are making an impact in both the jewelry market and for technological applications. In 1952, William Eversole at Union Carbide created tiny synthetic diamonds using the low pressure, comparatively low temperature, method of Chemical Vapor Deposition (CVD).