Look, mainly depends on the crystal transparency, real jade has strong transparency and oily luster; Listen, Zhen Yu's voice is crisp, but her voice is dull; In the test, the real jade scratched the glass, but the jade itself was intact.
Common fake jade includes plastic, stained glass, marble, electrochromic fake jade made of jade powder and crystal with salt water, imitation jade containing nitrate, etc. And their identification methods are different.
Plastic is lighter than jade, and its hardness is poor, so it is generally easy to identify. It's easy to distinguish between painting and getting off work. As long as you take it under the light or check it in the sun, you will see many bubbles in the glass.
It is difficult to distinguish fake jade by electric color. Its purpose is to electroplate inferior jade and then coat it with a beautiful emerald appearance, so it is easy to mistake it for real jade. At this time, you need to observe carefully. If there are some small cracks with blue in the green, it is fake jade. Because electroplating will leave cracks, experts call it "spider claws". It is also said that if the electro-colored fake jade is put in hot oil, the electroplating color will fade and return to its original color.
Synthetic jade made of jade powder, crystal and salt water is an imitation dark old pit jade. The identification method is simple, that is, their specific gravity is different. The specific gravity of natural jade is 3.3-3.4, while that of synthetic jade is only 2.8. Weigh by hand, or use a balance to distinguish between true and false.
China is the earliest and most extensive country in the world to exploit and utilize jade. There are many records in ancient books, and the names are also very miscellaneous, such as Shuiyu, Heritage Jade, Peiyu, Xiangyu, Nephrite and so on. Tremolite nephrite unearthed from Chahai site in Fuxin city, Liaoning province is about 8000 years ago (early Neolithic age), which is the earliest known real jade in the world. The most famous jade in China is Hetian jade in Xinjiang, which, together with dushan jade in Henan, xiuyan jade in Liaoning and lantian jade in Shaanxi, is called the four famous jade in China.
Jade is a relatively valuable mineral. Jade is rich in trace elements such as zinc, iron, copper, manganese, magnesium, cobalt, selenium, chromium, titanium, lithium, calcium, potassium and sodium. The embellishment of jade can eliminate impetuous heart, the color of jade can delight bored heart, and the purity of jade can purify dirty heart. Therefore, a gentleman loves jade and hopes to find natural aura in the jade body. Jade is the beauty of stone, with positive, moist and pure color. The same is true of precious stones. Its value does not depend entirely on the composition, and most jadeites are worthless. Like people, every nation produces heroes.
The health care function of jade;
First, according to Compendium of Materia Medica, "Jade pieces are made of jade. The smell is sweet and non-toxic. It is said that jade is the most abundant substance in human body. Indications for removing stomach heat, dyspnea, thirst quenching, beans and other debris. If you take it for a long time, you will be healthy for many years. It can moisten the heart and lungs, help the voice moisten the throat and nourish the hair. Nourish the five internal organs and stop fidgety. Gold, silver and Ophiopogon japonicus are beneficial. " It can be seen that jade was not only used for viewing in ancient times, but also played a very good role in medical care.
Secondly, according to modern science, jade not only contains many trace elements beneficial to human body, such as calcium, selenium, tin, zinc, copper, iron, manganese, magnesium, cobalt, chromium, nickel, lithium, potassium, sodium, titanium and so on. It also proves that it can produce special photoelectric effect, form special electromagnetic field, and resonate with the biological magnetic field of human body, thus improving human metabolism and various physiological functions. In addition, jade itself contains a variety of medium and trace elements, which can be inhaled through the skin through long-term wear, thus balancing human skills and achieving the effect of getting rid of diseases and health care.
Third, if worn on acupoints, the electromagnetic field of jade can also stimulate meridians, thus achieving the effect of dredging meridians and nourishing essence.
Jade's spirituality has not been verified, which can protect and bless the wearer, but jade loves and nourishes jade through long-term wear. Jade has certain benefits to human body through trace elements and electromagnetic fields. Achieve a tacit complementarity, people raise jade, jade raises people.
Reference from: Baidu Encyclopedia-Emerald