The first is to distinguish from the material. In the choice of jewelry, China people prefer jadeite, Hetian jade, turquoise, Nanhong and so on, which are also an important part of our Chinese jade culture; Westerners pay more attention to superficial things and like shiny, dazzling and straightforward things, such as diamonds, rubies, emeralds, cat's eyes and aquamarine, as well as tanzanite and topaz, which have risen in recent years. These are westerners' favorites. Let's take the most representative materials to explain them in particular.
Diamonds that westerners like are single crystal minerals, which are composed of carbon. In the earth, the arrangement and combination of elements change because of high temperature and high pressure, and the finished product is usually cut by a crystal in a tetrahedral way. The preciousness of a diamond lies not in the element itself, but in the way it is rearranged. Diamonds are also the hardest substances in nature known to mankind. If diamonds are put together with other jewels, they will be unscathed, but other jewels will be scratched, which is also the characteristic of diamonds.
Diamond is a single mineral, and its defects will be very obvious. Gia once gave four parameters, which are known as 4c. One of these 4Cs is clear. The one with the best clarity is invisible to the naked eye and can only be seen under a magnifying glass of ten times. As a 4C standard, flawless is the best, and there are grades to judge diamond defects, which are very clear and detailed internationally.
The jadeite and hetian jade that orientals like are composed of countless tiny mineral particles and belong to an aggregate. There is not much talk about the specific formation process of jadeite and hetian jade, but they are all made up of many crystals gathered together to form a large piece of material, which is different in material properties.