Precautions for cleaning gold and silver jewelry
What are the precautions for cleaning gold and silver jewelry? The editor summarized it. After wearing jewelry for a long time, the surface layer will cover the original flickering light due to oxidation or dirt accumulation. At this time, you should take the jewelry to the jewelry processing shop for cleaning.
But because of this, some unscrupulous operators will use the cleaning opportunity to defraud customers of gold, resulting in customers' gold and silver jewelry cleaning "being slimmed down". What are the precautions for gold and silver jewelry cleaning? Let's take a look at what traps lurk in the cleaning service.
Gold jewelry can be "slimmed down" in the cleaning solution because some unscrupulous jewelry processors add nitric acid to the hydrochloric acid solution they use. After the gold that has been grilled at high temperature is soaked in this highly corrosive solution for 20 minutes, the gold will dissolve unknowingly. And this mixture of hydrochloric acid and nitric acid is the so-called "king water". "King water" can dissolve precious metals such as gold and platinum, releasing gold elements, and these "king water" with dissolved gold elements can restore the gold dissolved in the "king water" by adding active metals through a simple chemical reaction.
The scam of "being slimmed down" gold and silver jewelry cleaning is relatively hidden, and many times customers will not notice it when they look at it in person, so they should take precautions when cleaning precious jewelry:
The first is to choose a regular jewelry store. Some large-scale and reputable places are more secure. You can also check the qualification certificate and business license of the jewelry store;
The second is to weigh the exact weight of your jewelry before cleaning and record it; when cleaning jewelry, smell the cleaning solution. If there is a pungent smell in the solution, it is "king water", so be careful; go to other departments to weigh it again in time after processing.
The third is to ask for the bill after cleaning and paying the fee. Once the operator is found to have fraudulent behavior, it is necessary to report it to the relevant departments in a timely manner.
Home cleaning method for gold and silver jewelry
Gold jewelry cleaning: First, soak the jewelry in 30% sulfuric acid cleaning solution for 5 minutes, wash it with a soft brush, then rinse it with tap water for 5 minutes, and finally soak it in 20% shampoo or detergent for 10 minutes, then brush it, rinse it with water for 20 minutes, and finally dry it with silk. Remember not to use irritating products such as fluoride toothpaste or bleach.
To clean silver jewelry, soak the silver jewelry in the cleaning liquid for 10 minutes, then wash it with a soft-bristled toothbrush, and finally rinse it with water for 10 minutes. Do not come into contact with perm water and other items, otherwise white spots will appear.
