From the perspective of minerals, the colors of various ore fields can be divided into three types, and the original inherent color is called white; The color produced by mixed pigment ions is called heterochromatic; The color caused by cracks is called pseudocolor. The color of dzi beads can be roughly divided into five kinds: milky white, black, brown, red and light green, among which milky white is the best texture, so whether the threaded hole of dzi beads is milky white is one of the necessary conditions to distinguish dzi beads.

2. Look at the color of dzi beads

The dzi beads are generally black, white, dark brown and milky white, and black and white lines are also one of the first choices for many people.

Step 3 look at the luster of dzi beads

As far as the backlight intensity of the surface is concerned, the higher the reflectivity, the stronger the luster. General luster can be divided into glass luster, grease luster, wax luster and earth luster. Due to long-term natural weathering, the surface of dzi beads is not smooth and the reflected light is disordered. Observing the surface with naked eyes, it seems to be coated with a layer of grease, which is called grease luster. Some oils have a particularly bright luster, which can be called waxy luster.

4. Look at the transparency of dzi beads

Transparency refers to the ability to transmit light, and the selection of dzi beads is based on transparency and translucency. Of course, opaque beads also have the best quality, and it is inevitable to regret leaving transparent dzi beads.

5. Look at the integrity of dzi beads

Observing the integrity of the whole dzi bead from the outside is the most direct and effective. Generally speaking, except for the handed down products, a small part of the damage may be used for Buddha storage or grinding and dispensing, which should be acceptable. As for the broken or badly damaged dzi beads, they have lost their function and are not suitable for collection. The new imitation dzi beads are generally complete, and their slopes are marked with "residual", so special attention should be paid. 6. Look at the weathering line of dzi beads

The so-called weathering pattern refers to the surface characteristics of aging and is the most representative sign of age. Looking closely with a magnifying glass, we can find many natural irregular weathering lines with different shades, such as fish scales and chicken feet, especially black and brown lines.

7. Look at the cinnabar spots of dzi beads.

The so-called vermilion spot is a red spot that naturally grows on the beads of dzi beads from the inside out, but not every dzi bead has vermilion spots, nor does it mean that dzi beads with vermilion spots are good goods. It's just one of the signs to judge the old and new dzi beads.

8. Look at this patina

The patina is not the dirt on the dzi beads, but an adhesion, a long-term fusion of acid, alkali, molecules and substances. It can't be washed away, just like the patina on old porcelain and Ming and Qing furniture. This patina is smooth and natural, and nothing can make it natural. Natural aging and artificial aging are not the same thing. The deformity of time is a kind of beauty, and the artificial "residual aging" is getting uglier and uglier.

Extended data:

Name source:

Who got the name of dzi Zhu? There is no way to prove it. Hong Kong, Macao and Taiwan call it Tianzhu, Tibetans call it "Silk" and Han people call it "Nine Eyes". 1952 Prehistoric Beads from Tibet published by Austrian Tibetan scientists René de and Nebesky Volkowitz and 1953 published Gods and Ghosts in Tibet.

Both books are called Opal. In the book History of Beads published in 1986, Mr. Dobin Lewis mentioned that this kind of beads is "etched or bleached carnelian". "New Tang Book" records: "Tubo women braid their hair and don't wear pearls. A bead is good for yunzhu, and a good horse is easy for one person. "

In the article "The God of Bonism in Tibet", Dr. Gele, a famous Tibetan scholar in modern times, called this kind of beads "fun with nine eyes". Professor Liu Liangyou, a famous scholar in Taiwan Province, mentioned in the article "Exploring the Origin of the dzi beads" that Tibetan scholars usually call dzi beads "white agate fun", which is a kind of acquisition of Tibetan costumes. Lin Dongguang, a merchant of dzi beads in Taiwan Province Province, called dzi beads from beginning to end in the article "Tibetan dzi beads" published in 1997.

The ancestors of Tibet believed that the dzi beads were supernatural things created by God, which were naturally generated or descended from the sky. If some people say that dzi beads are a handicraft of "harmony between man and nature", they will strongly object.

Ask many Tibetans where the dzi beads came from, and they all tell the same old myth: in ancient times, dzi beads were ornaments worn by immortals. Whenever the beads are damaged or slightly damaged, the immortals throw them along with the biological fossils, which is the same era as Nautilus and trilobites.

People found conch fossil dzi beads in Dingri area of Himalaya and fossil mountain in no man's land of northern Tibet. The story of the common people goes like this: once a man saw such a bug on the top of the mountain, he threw his hat at it and covered it. When he took off his hat, the bug had petrified and turned into a dzi bead. In the article "Prehistoric Beads in Tibet", Dr. R. Nebesky-Vokowitz tells a legend in Ali area in western Tibet.

People think that dzi beads originated from a mountain near Ruddock, and they go down the slope like a stream when it rains heavily. However, one day, a witch stared at the mountain with "evil eyes", so the dzi beads stopped flowing at once. Until today, natural dzi beads with bright eye patterns can be seen in places where dzi beads are constantly flowing out.

Baidu encyclopedia-Tibet Tianzhu

Li Yong, Tibet, teaches you how to distinguish the true and false dzi beads.