1, look at the weather pattern 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.

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.

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. The surface of dzi beads looks like a layer of grease with naked eyes. This shiny fake can't be made. It is obvious from the picture that the first one is fake.

4, look at the 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 it is impossible for any old patina to make this naturally formed patina. Artificial patina will fade with time. The left side of the picture below is true and the right side is false.

5. Look at the integrity of the 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 vermilion spots in Tianzhu. 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.

Extended data:

The patterns of dzi beads generally include points, lines, squares, circles, triangles, diamonds, polygons, seed fonts, irregular patterns, animal patterns, special abstract patterns and symbols.

Tianzhu originated from the worship of Lingshi by Tibetans. Many Paleolithic sites have been found in Karuo site, Naqu in northern Tibet and Shuanghudeng area, which completely broke the legend that Tibetans are immigrants. Archaeology has proved that the Tibetan people created splendid prehistoric civilization as early as the Paleolithic and Neolithic Age, and flourished in this no man's land and other places.

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