How to choose a gold necklace?
When buying a gold necklace, you must first understand the purchase knowledge of gold; gold is gold, and the chemical element symbol Au is a precious metal with soft texture, golden yellow and corrosion resistance. Gold is one of the rarer and more precious metals in metals. Gold jewelry is divided into 24K (more than 99% gold content), 22K (91.7% gold content), 18K (75% gold content), 14K (58.33% gold content), 12K (50% gold content). When purchasing a women's gold necklace, you can identify it from the following four aspects: One: can be distinguished from the color of gold As the saying goes, gold is "seven green, eight yellow, nine purple, ten red." Experts believe that the jewellery containing gold is 70% green, and the gold content is yellow. The gold content is yellow and transparent. The gold content is 10%. The pure gold is soft. It is generally not used for mosaic jewelry. Therefore, where the inlaid gold ornaments claim to be 24K, there must be fraud. Second: you can distinguish from the weight of gold The specific gravity of gold is 19.3 g/cm3, and the coloration and specific gravity are relatively large. When the specific gravity is close to 19.3, the higher the pure gold. When the specific gravity is 18.5, it contains 95% of gold, and when it is 17.8, it contains 90% of gold. By analogy, as long as the specific gravity is measured, the color of the jewelry can be known, but most people can see if there is any sedimentation. Three: can listen to the sound A high-quality lady's gold necklace, thrown on the concrete floor will have a dull squeak, sound and no rhyme, no strong, commonly known as "dead". On the contrary, the gold ornaments with low color are thrown on the concrete floor with a rhyme and a long sound, and a little rebound. Four: You can use the hard and soft method (However, this method is generally not allowed at the time of purchase.) The higher the color of gold jewelry, the softer and more inelastic. The real gold bite or needle stroke will have a slight mark, and the hand will be folded without broken lines and burned ( Not particularly high temperature) will not change color, the low color, the negative is the opposite. Men'S Jacket,2020 New Denim Jacket,Popular Jeans Jacket,Cotton Mens Jean Jacket Shaoxing Weihui International Trade Co.,Ltd. , https://www.weihui-fabrics.com