Identification of true and false mountain turtle shell bracelets

1. The stain of tortoise shell consists of many spherical cities, and the color of plastic is banded. There are obvious boundaries between ribbons, and there are traces of mold. Therefore, we can distinguish between true and false tortoise shells according to the different characteristics under the microscope.

2. Tortoise shell can be identified by its refractive index and density. The refractive index of tortoise shell is generally higher than that of plastic, but its density is lower than that of plastic. Therefore, plastics can be identified by comparing their refractive index and density.

3. Comparing the plastics in the previous method, heating the tortoise shell and the plastic with hot needles respectively, we will find that the tortoise shell will give off the smell of burnt hair, while the plastic is spicy. According to the different smells after heating, the authenticity of tortoise shells can be identified.

Extended data:

Regulations on antique collection of hawksbill bracelets;

1. All cultural relics left in the underground, internal waters and territorial waters belong to the state;

2. Ancient cultural sites, ancient tombs and cave temples belong to the state. Immovable cultural relics such as memorial buildings, ancient buildings, stone carvings, murals and modern representative buildings designated by the state belong to the state unless otherwise stipulated by the state;

3. Cultural relics collected by state organs, armed forces, enterprises and institutions owned by the whole people belong to the state;

4. Private individuals can only collect all kinds of cultural relics handed down by ancestors and people, and it is strictly forbidden to resell them for profit and sell them to foreigners without permission;

5, private cultural relics leaving the country, must be identified by the provincial cultural department, issued an export license and notify the customs in advance;

6. Cultural relics with certain historical, artistic and scientific value that were produced or made before 1949 (inclusive) are prohibited from leaving the country in principle. Among them, cultural relics produced before 19 1 1 year (including191year) are prohibited from leaving the country;

7. Cultural relics shops and their entrusted institutions are the unified cultural relics acquisition departments in various regions;

8. Sellable cultural relics must be identified by the cultural relics department and sealed with wax before they can be sold;

9, the purchase of cultural relics should obtain a special invoice for the sale of cultural relics;

10, the purchase of cultural relics can require the acquisition of cultural relics appraisal certificates.

References:

Antique-Baidu Encyclopedia