special reminder
Buying a diamond certification is the key
In fact, Ms. Sun’s experience is not a case. The reporter learned from the Municipal Gold and Jewelry Testing Center that since this year, they have received dozens of complaints from the citizens who bought the diamonds on the overseas tour.
"China's "Diamond Grading" standard is basically the same as that of some developed countries such as GIA in the United States. There will be some small differences between the levels, but it is impossible to set the K color diamond as D color. Zhou Suzhen told reporters that China's national standards for the color of mosaic diamonds are divided into DE, FG, H, IJ, KL, MN and <N seven grades according to white to yellow. For diamonds of the same size, the higher the color level, the higher the price.
Experts pointed out that the most basic thing to buy diamonds is to purchase diamonds with identification certificates, so that not only the quality is guaranteed, but also it can be realized in the future. The most recognized and recognized certificate in the world is the GIA Diamond Certificate of the Gemological Institute of America, the HRD Diamond Grade Certificate of the Belgian Diamond High Council and the IGI Diamond Grade Certificate of the International Gemological Institute.
The domestic certificate is mainly the NGTC diamond grade diamond grading certificate of the National Jewelry Quality Supervision and Inspection Center, and the NGGC Diamond and Diamond grading certificate of the National Gold and Silver Products Supervision and Inspection Center. In addition, there are more than 100 nationally recognized jewellery testing institutions in China, which can also issue certificates for diamonds. For example, the Ningbo Quality Inspection Institute Gold Jewelry Certificate has passed the qualifications of measurement certification, national laboratory accreditation and mutual recognition of international laboratories. The function of online inquiry can be used to query the authenticity of the certificate by entering the certificate number.
It is difficult for ordinary consumers to judge the quality of diamonds. In the diamond industry, diamonds are usually evaluated by four standards: cut, clarity, color, and carat weight. Since the English letters of these four standards begin with C, It is customary to call the 4C rating. A formal diamond certificate gives the four levels of diamonds. Reading these four criteria before buying a diamond helps to correctly judge the value of the diamond.
Weight is the most important factor to measure the value of diamonds; clarity refers to the size, color, and distribution of diamonds. The smaller the ç‘•ç–µ, the lighter the color, the smaller the number, and the higher the position, the higher the clarity. In the national standard, the clarity level of diamonds is divided into five grades: LC, VVS, VS, SI, and P. According to industry insiders, diamonds above VS level are generally good. VVS grade diamonds are rare in the market; the whiter the color of diamonds, the better. Currently, H and IJ are more common in Ningbo market; The ratio of diamond cutting, symmetry, and good cut can make diamonds dazzling.
Gold jewelry name pay attention to "Zhang Guan Li Dai"
Case
Not long ago, Mr. Shu planned to buy platinum jewelry and bring it home to his friends. He spent 968 yuan and 698 yuan respectively to buy a PD990 ring and PD990 earrings in a shopping mall in the city. After buying home, Mr. Shu’s friend found that the two jewellery were not platinum but palladium. So Mr. Shu believes that merchants use palladium to impersonate platinum to deceive and harm consumers, and immediately hold jewelry and invoices to negotiate with the merchants, requesting a return or exchange.
The shopping mall thinks that Mr. Shu was actually buying palladium at the time, and he also stated on the invoice that the store did not deceive consumers. Finally, under the mediation of the industry and commerce department, the store agreed to exchange Mr. Shu’s palladium jewellery with a gold necklace and pendant.
Coincidentally, Miss Xu of Beilun also encountered similar problems. When she bought a platinum ring at a jewelry store, the salesperson recommended her a product labeled "Pd950." After she bought it home and studied it carefully, she found that “Pd†was not a special sign for platinum, but an element called “palladiumâ€.
special reminder
Buy gold ornaments carefully and not enough color
In fact, there are many consumers like Mr. Shu who don't know the common sense of gold jewelry. The reporter randomly surveyed more than 20 consumers and found that more than 90% of the people did not know the difference between platinum, palladium, gold, K gold, white gold and platinum, and about 50% of consumers had little knowledge of the common knowledge of gold jewelry.
For the difference of various gold ornaments, the author visited the gold jewelry counters in some shopping malls in Yucheng. The gold jewelry sold mainly includes platinum, platinum (Pt), palladium (Pd), gold (Au), gold of various colors and alloys of other metals (18K gold), etc., which have different compositions and purity, generally on jewelry. There will be a mark.
The elemental identification of platinum and palladium differs by only one letter, and the price per gram differs by a hundred dollars. Platinum is the most precious metal mentioned above. Its chemical properties are more stable than gold and its price is more expensive than gold. The “Pt900†or “Pt950†seen on the jewelry store's products means that the platinum content of the jewelry is 90% and 95% respectively. Palladium has a light weight and a low density, and it becomes dark when placed in the air for a long time.
Similarly, gold is a thousand gold, and 18K gold is an alloy containing 75% gold. The price and pricing method of the two are different. Zhou Suzhen told reporters that the term "18K Platinum" is often not standardized. It should be called "white (color) 18K gold", which is made from 75% gold and 25% other metals. She said that the prices of precious metals of different materials vary greatly. For example, the market price ratio of platinum to palladium is about 2:1.
Experts pointed out that there are indeed some small jewellery merchants setting traps on the name of the jewelry. For consumers, they should know some gold jewelry expertise, such as the representative symbols of the main gold ornaments: platinum (Pt), palladium (Pd), gold. (G or Au), silver (S). At the same time, the national standard also revised the name of precious metals in 2008, requiring merchants to use Chinese characters to indicate the material of precious metals for consumers to understand. Each jewellery has a corresponding certificate of quality inspection, clearly indicating the name, material, weight, etc. of the jewellery. In order to prevent the unscrupulous trader "Zhang Guan Li Dai", consumers can refer to the instructions and ask the merchant to re-name "weight".
Zhou Suzhen reminded consumers that Zhejiang Province issued the “Standards on Jewelry and Jade Markingâ€, requiring merchants to have warnings on the products they sell, and remind customers in the sales manual of the precautions for wearing and maintaining the jewelry; The symbolic meaning of the gold jewelry elements that consumers are easily confused with, the "standard" also requires: the seller must indicate the ingredients in the Chinese jewelry on the label and invoice of the gold jewelry. Consumers should pay special attention to the attributes of jewelry and their own needs before buying, and choose the products that suit them. After purchasing, you should keep the proof of consumption and let the seller write out the ingredients of the purchased jewelry. Once you find that the bad seller "hangs the sheep to sell dog meat", you can defend your rights.
Reporter Jin Xiaodong correspondent Zheng Lei
News memory
How to look at the certificate
A goods are not necessarily the best
After the test of the Gold Jewelry Testing Center, they will issue you an identification certificate, which will indicate what is this in the “Name†column. Take the jade as an example. If the name is written on the emerald pendant, Jade bracelets and the like, then it is natural; if the word "handling" is written, it must be a manually processed, jadeite, and the certificate will also indicate the method of treatment, such as dyeing. , bleaching, filling, coating, flattening, etc.
Zhou Suzhen told reporters that the general certificate remarks indicate that it is A goods, which means natural meaning, but it is not the A-class goods in the usual sense. It is not necessarily the best, and it cannot explain the value of its value. "It is possible to have tens of dollars, or millions of yuan, or tens of millions of yuan. The A, B, and C goods here are not distinguished by good or bad, but by natural and different treatment methods."
Zhou Suzhen said that A goods are natural, while B goods are bleached and filled, while C goods are dyed. "Good things are not used to make B and C goods." If it needs to be bleached, it may have more impurities, loose structure, and poor color when it is natural, so it needs to be treated. A, B, C goods can not be measured by price.
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