There are many kinds of jewelry: diamonds, pearls, precious stones, tourmaline and so on. These pure natural products can't escape the development of science and technology and the intelligence of human beings, so how to distinguish between true and false jewelry?

Pearl: consumers can gnash their teeth when buying. Real pearls have toothache, and plastic pearls or coated pearls will slip.

Even in hot weather, natural pearls have obvious coolness. Compared with freshwater pearls, seawater pearls are cooler and wetter. Plastic beads generally feel warmer. If it is pure glass imitation beads, the specific gravity is greater than that of pearls, and if it is wax-filled glass imitation beads, the specific gravity is only about half that of pearls. Real pearls are not afraid of rubbing, because as long as the powder is wiped off after rubbing, the original luster is presented again.

Emerald:

Whether a piece of jade has value or not is not only related to the types of jade raw materials it uses, but also to the quality of its jade texture. To put it bluntly, the quality of jade will play the most direct and decisive role in the price of jade.

1, look at the color. For a piece of Hetian jade, color will greatly affect its beauty. In general, the more natural, pure and uniform the color, the better.

2. Identify the purity, transparency, fineness and water head of jade. This aspect is actually easy to understand: the higher the purity, the better the texture, the better the fineness and water head, and the better the texture. For transparency, almost all hetian jade is translucent, even the best suet jade.

3. Look at the luster and oiliness of the jade surface. However, all the fine Hetian jade wares have obvious gloss on their surfaces, and this gloss is very soft. In addition, the heavier the oiliness, the better the organic quality and the higher the price of Hetian jade.

It must be pointed out here that the author only takes Hetian jade as an example to talk about how to identify the quality of jade. For the identification of other kinds of jade, the aspects that should be paid attention to are basically the same.

Diamonds: According to the new standard of diamond classification, diamonds are classified from four aspects: color, clarity, cutting and quality (size), which is called 4C classification for short. Diamonds above 0.2 carats must have a classification certificate, which indicates these four contents.

In short, you can't have too perfect jewelry. If you need quality assurance, you need to buy it at the counter yourself.