Careful cleaning of gold cargo processing artificial "weight loss"
Cao Zhuren introduction, jewelry earrings one to test center recently identified members of the public, find themselves 30 grams of gold necklace in the processing, the weight of even less than ten grams. Some unscrupulous gold processing shop in the processing process, the doping of copper, silver and other metals is relatively cheap access to huge profits.
Also exists in the gold wash on the "stolen money" phenomenon, not easily found in the consumer, the main cleaning solution is called "aqua regia" of liquid. If the cleaning solution is "aqua regia", gold jewelry will certainly be "slim." "Aqua" fashion accessories is the concentrated nitric acid and concentrated hydrochloric acid at 1:3 ratio of blending, the gold in place, from a chemical reaction is dissolved. Add alkaline liquid, solid gold can be restored.
Certificate authority should pay attention to the time of purchase signs
Gold, Platinum and gold jewelry is not as high as possible. When people buy gold jewelry, do not blindly believe that the big brands, jewelry bracelets big brands often the pursuit of gold jewelry fine style, complex, very easy to process quality problems.
When people buy jewelry, in addition to select a regular department stores, a grasp of basic visual recognition, the need to clearly understand whether the goods-one of the identification certificate, the certificate whether the photos and in-kind match, the certificate is recognized by the State Inspection issued by the agency, cubic zirconia earrings whether with a "CMA" "CAL" and other authorized signs. Jewelry, the timely review is necessary.
Cao Zhuren introduction, jewelry earrings one to test center recently identified members of the public, find themselves 30 grams of gold necklace in the processing, the weight of even less than ten grams. Some unscrupulous gold processing shop in the processing process, the doping of copper, silver and other metals is relatively cheap access to huge profits.
Also exists in the gold wash on the "stolen money" phenomenon, not easily found in the consumer, the main cleaning solution is called "aqua regia" of liquid. If the cleaning solution is "aqua regia", gold jewelry will certainly be "slim." "Aqua" fashion accessories is the concentrated nitric acid and concentrated hydrochloric acid at 1:3 ratio of blending, the gold in place, from a chemical reaction is dissolved. Add alkaline liquid, solid gold can be restored.
Certificate authority should pay attention to the time of purchase signs
Gold, Platinum and gold jewelry is not as high as possible. When people buy gold jewelry, do not blindly believe that the big brands, jewelry bracelets big brands often the pursuit of gold jewelry fine style, complex, very easy to process quality problems.
When people buy jewelry, in addition to select a regular department stores, a grasp of basic visual recognition, the need to clearly understand whether the goods-one of the identification certificate, the certificate whether the photos and in-kind match, the certificate is recognized by the State Inspection issued by the agency, cubic zirconia earrings whether with a "CMA" "CAL" and other authorized signs. Jewelry, the timely review is necessary.