It's really bloody. Its jade is old and moist, full of dirt, with heavy rust and spots. You can tell at a glance that it is an ancient jade. The true blood color is from the outside to the inside, its depth has a naturally changing color, and the surface has a layer of glass luster.

The best way to distinguish is to treat soil as a fault. That is to see if this jade has soil spots, soil rust (including water rust) and soil bites. Some are generally true, if not, there will be problems. This soil rust is naturally formed, deep inside and outside, rather than floating on the surface.

Now fake blood oozing, generally there are the following situations:

1, jade skin is fake. The red jade skin looks like blood seepage, but its luster is dark, its constitution is loose, its weight is light, and its surface has a layer of floating light, commonly known as thief light, which lacks the color change of depth.

2, artificial dyeing, commonly known as old pumping oil. Its characteristics are that jade is not ancient, its color is dim, it is either too deep or too shallow, there is no shade change, and there is no soil rust. Fake imitation of HongLing, the texture is too thick, and some of them have cracks on fire. All blood exudates with cracks on the surface such as red silk are generally false exudates.

Extended data:

The health care function of jade;

1. 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 to decoction. "This shows that jade was not only used for viewing in ancient times, but also played a very good role in medical care.

2. Modern science believes that 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 and titanium. 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.

3. If worn on acupoints, the electromagnetic field of jade can also stimulate meridians, thus achieving the effect of dredging meridians and nourishing essence.

Baidu Encyclopedia-Qin Yu