Nowadays, the technology of artificially synthesizing ruby ​​is very mature, and there are many methods for artificially synthesizing ruby. However, there are currently three main methods: flame melting method, flux method, and hydrothermal method.
Among them, the flame melting method ruby ​​is easier to identify, and it is determined to be synthetic ruby ​​by observing the internal curved growth lines and bubbles. The color bright red on the market, especially in the tourist shop, is marked with "red corundum" and "corundum". The carvings or ornaments of Rubin Stone are actually such synthetic rubies. The flux method ruby ​​requires a professional to observe its internal characteristics under a high power microscope to be identified. The hydrothermal synthetic ruby ​​synthetic environment mimics the growth environment of natural rubies. The internal features are very similar to natural rubies. It is difficult to distinguish them by general instruments. It is often necessary to use other large instruments such as x-ray instruments. Synthetic gemstones are roughly composed of synthetic rubies, synthetic spinels, synthetic red tourmalines, synthetic red zircons, and cobalt-containing red glass. It is not difficult to identify these seemingly rubies because they are more obvious in various physical properties than real rubies. The difference.
Rubies synthesized by different methods have different inclusions, which need to be checked in a professional laboratory or through a magnifying glass. The common feature of synthetic rubies is that the colors are bright and relatively uniform, and it is difficult for the naked eye to find inclusions therein, and the interior is very clean. Most of the natural rubies on the market are more or less obvious so-called "cotton mites", that is, a combination of inclusions and internal fissures distributed in a certain direction (controlled by the internal structure of the crystal), sometimes with a filamentous inclusion. For natural rubies that are difficult to find obvious inclusions, long-wave UV lamps (ordinary portable pocket detectors) can be distinguished from synthetic rubies.
Experiments show that natural rubies and synthetic rubies emit red fluorescence under long-wave UV lamps, but synthetic rubies are brighter and more brilliant.
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