1. Formation process: Natural diamonds are formed under the conditions of high temperature and high pressure in the deep crust, and its formation process may take tens of millions or even hundreds of millions of years. Synthetic diamonds are synthesized by simulating the formation process of natural diamonds in a short time through laboratory technical means.
2. Physical properties: Although natural diamonds and synthetic diamonds are very similar in appearance, their physical properties are different. For example, their density, hardness and refractive index may be slightly different. These differences can be detected by professional instruments (such as spectrometers).
3. Chemical composition: The chemical composition of natural diamonds and synthetic diamonds is basically the same, but the clarity is different. Because synthetic diamonds are synthesized by chemical methods, they may contain a small amount of impurities. However, natural diamonds tend to have high clarity because of their long formation time.
4. Price: Due to the scarcity of natural diamonds and the complexity of the formation process, their prices are usually higher than those of synthetic diamonds. The price of synthetic diamonds is relatively low because they can be produced on a large scale.
5. Application field: Natural diamonds are mainly used in jewelry, high-end watches and other fields, while synthetic diamonds can be used in industrial fields, such as cutting and polishing, in addition to jewelry.
In a word, although it is difficult to distinguish natural diamonds from synthetic diamonds in appearance, there are certain differences in their formation process, physical properties, chemical composition, price and application fields. If you need to buy diamonds, it is recommended to choose formal channels and conduct testing through professional testing institutions to ensure that the diamonds you buy are natural diamonds.