Excuse me, which institution should I go to the gold appraisal?

You can get the National Gold Diamond Quality Supervision and Inspection Center and the National Jewelry Quality Supervision and Inspection Center for testing.
The National Jewelry Quality Supervision and Inspection Center is a national quality inspection institution authorized by the State Administration of Quality Supervision and Inspection and Quarantine in accordance with the law, and has been approved by the National Appraisal Committee by China. Revised national standards and industry standards.
This data
The national gold diamond product quality supervision and inspection center (NGDTC) is a national gold diamond quality inspection institution authorized by the State Administration of Quality Supervisionadory inspection in accordance with the law. The center accepts the quality supervision and inspection of gold jewelry and jade products issued by the state, and has a legal and third -party fair status.
The center has passed the national measurement certification, review acceptance, and the recognition of the National Appraisal Committee of the Chinese Laboratory. The inspection capabilities cover all inspection items for precious metals and jewelry accessories.
The center has inspection equipment such as infrared spectrometers, fluorescent spectrometers, plasma launch spectrometers such as the United States, Germany, and Japan. The center has a team of experienced and superb professional and technical personnel, with researchers, doctorates, national registered jewelry inspectors, and national registered jewelry appraisers and other professional and technical personnel.
In centralized vocational skills training and appraisal work authorized by the Ministry of Labor and Social Security, there are "national precious metal jewelry, diamonds, treasure jade inspector professional skills appraisal stations" and "national jewelry and jade salesperson professional skills appraisal station "Waiting for training and appraisal institutions. Tens of thousands of businesses and marketing personnel have been trained for inspection institutions and gold jewelry companies.
Reference materials Source: Baidu Encyclopedia-National Jewelry Quality Supervision and Inspection Center
Reference materials Source: Baidu Encyclopedia-National Gold Diamond Product Quality Supervision and Inspection Center

Pay content for time limit to check for freenWhat are the domestic gold appraisal agencies? General shopping malls and gold shops can identify the authenticity of gold, but they cannot identify the gold content of gold, and these appraisal agencies lack credibility, consumers have doubts about the identification results, so gold shops such as gold shops are not completely recognized by consumers. In fact, there are generally gold jewelry appraisal centers in each region. Especially in the provincial capital cities, there are precious metal appraisal centers, which can identify the authenticity and purity of gold. For specific identification addresses and contact information of each city, you can check or dial 114 on the Internet to understand in detail, or go directly to the gold shop to ask where you can identify gold jewelry. In fact, in addition to learning the authenticity and purity of the professional appraisal agency, you can also directly identify it through other methods, such as: 1. The color appraisal method can distinguish the pure gold, K gold, and real gold according to the different luster and color of the color. , Fake gold. Red yellow gold is better, and the color is more than 95%; the positive yellow color is about 80%; the blue and yellow color is about 70%; the yellow color is slightly gray -formed at about 50%. The folks are called "seven greens, eight yellow, nine five red, and yellow leucorrhea ash." If it is a gold jewelry with a long storage time, there is a saying that "copper turns green, silver turns black, and gold will never change color". Therefore, the more positive the golden color, the higher the purity. 2. Listening to the rhyme and elasticity of the sound appraisal method. When a high -quality gold jewelry is knocked down or threw hard to throw it, it will make a bright and low voice of "hits, cotton", and has no rhyme, no elasticity, K gold sound rhyme, sound, elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity. The more the rhyme, the more the elders, the worse the color. Therefore, the higher the purity of gold, the smaller the elasticity and the lower the sound. 3. You can also use a professional goldstone to identify it, operate in accordance with the specifications, and then use the contrasting color to definitely make the gold jewelry.nWhat are the domestic gold appraisal agencies? General shopping malls and gold shops can identify the authenticity of gold, but they cannot identify the gold content of gold, and these appraisal agencies lack credibility, consumers have doubts about the identification results, so gold shops such as gold shops are not completely recognized by consumers. In fact, there are generally gold jewelry appraisal centers in each region. Especially in the provincial capital cities, there are precious metal appraisal centers, which can identify the authenticity and purity of gold. For specific identification addresses and contact information of each city, you can check or dial 114 on the Internet to understand in detail, or go directly to the gold shop to ask where you can identify gold jewelry. In fact, in addition to learning the authenticity and purity of the professional appraisal agency, you can also directly identify it through other methods, such as: 1. The color appraisal method can distinguish the pure gold, K gold, and real gold according to the different luster and color of the color. , Fake gold. Red yellow gold is better, and the color is more than 95%; the positive yellow color is about 80%; the blue and yellow color is about 70%; the yellow color is slightly gray -formed at about 50%. The folks are called "seven greens, eight yellow, nine five red, and yellow leucorrhea ash." If it is a gold jewelry with a long storage time, there is a saying that "copper turns green, silver turns black, and gold will never change color". Therefore, the more positive the golden color, the higher the purity. 2. Listening to the rhyme and elasticity of the sound appraisal method. When a high -quality gold jewelry is knocked down or threw hard to throw it, it will make a bright and low voice of "hits, cotton", and has no rhyme, no elasticity, K gold sound rhyme, sound, elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity. The more the rhyme, the more the elders, the worse the color. Therefore, the higher the purity of gold, the smaller the elasticity and the lower the sound. 3. You can also use a professional goldstone to identify it, operate in accordance with the specifications, and then use the contrasting color to definitely make the gold jewelry.

National Gold Diamond Product Quality Supervision Center

The big brand Chow Tai Fook Zhou Dasheng wearing dreams and so on. They all have gold identification and testing services, and they all have reporting qualifications. Can issue relevant test certificates!