Traditionally, jewelers have judged the quality and value of a diamond primarily by its appearance, colour, clarity, cut and luster. However, with the development of laboratory-grown diamond technology, the appearance and physical characteristics of man-made diamonds have come very close to natural diamonds, and jewelers need to be more careful in judging the authenticity of a diamond.
At present, the common methods for detecting man-made diamonds on the market include:
- Specular reflection method: put the diamond on a special reading instrument, and judge whether the diamond is a natural diamond by detecting the light reflected by the specular surface of the diamond.
- Ultraviolet Fluorescence Method: Artificial diamonds will produce a stronger fluorescence reaction than natural diamonds under ultraviolet light. Jewelers can use ultraviolet light to detect whether a diamond is an artificial diamond.
- Spectroscopy: By detecting the absorption and emission spectra of diamonds, the authenticity and origin of diamonds can be judged. Synthetic diamonds have slightly different spectral patterns than natural diamonds, and a jeweler can compare the spectral patterns to determine if a diamond is synthetic.
- Infrared Spectroscopy: Using an infrared spectrometer to detect the infrared absorption spectrum of a diamond can detect the thermal stability of the diamond, thereby judging whether the diamond is a man-made diamond.
In short, with the development of laboratory-grown diamond technology, jewelers need to use more sophisticated detection methods to judge the authenticity and source of diamonds, so as to ensure the rights and interests of consumers. At the same time, consumers also need to understand the source and quality of diamonds when purchasing diamonds in order to make informed decisions.