Gold knowledge introduction

No rust, corrosion resistance, and good gloss retention are the characteristics of gold. Although gold, especially K gold, is very tough, it is also the most plastic of all metals. Because pure gold is too soft to withstand the squeezing of daily wear, gold is usually not rusty, not easy to corrode, and good gloss retention is the characteristics of gold. Although gold, especially k gold, is tough, it is also the most plastic of all metals. Because pure gold is too soft to withstand the squeezing of everyday wear, gold is usually alloyed with other metals such as silver, copper, nickel, and zinc to increase its hardness and durability. k, the unit of gold purity. After the letter k, a number is often added to indicate the purity of the gold, and it also indicates how much gold is contained in this jewelry. If it is 24k, it means that the gold content is 100%. The color of gold is determined by two factors: 1. The type of synthetic metal it contains. 2. The percentage of each metal. Introduction to gold knowledge k gold Gold au is one of the first metals that people know. People often use the gold standard to define the world's circulation system. 24 karat u003d 100% gold. Jewelry made of 24k gold is too soft, and only suitable for making gold jewelry alone. 22 karat u003d 91.7% gold 22k gold is very soft and not suitable for jewelry. 18 karat u003d 75.0% gold 18k gold is recommended as fine jewelry and is widely used in China. 14 karat u003d 58.3% Gold 14k gold can also be considered as jewelry and is widely used in Europe and the United States. 12 karat u003d 50.0% Gold 12k is not recognized by the jewelry industry. Platinum Because 18k white gold has 75% gold content and 14k white gold has 58.3% gold content, jewelry made from these metals has a slight yellow color. To increase its whiteness, almost all platinum is plated with a shiny, extremely hard metal called rhodium. With the increase in the number of times this kind of jewelry is worn, after a period of time, the layer of rhodium plated on the surface may wear off, revealing the original metallic color. Re-plating with rhodium is a very simple procedure, so you can still restore your jewelry to its original charm. Remember: Keep your gold jewelry away from corrosive chemicals such as chlorine and cleaning agents, reduce daily wear and tear, and extend the color life of gold. The method of cleaning gold is as follows: Use soap and warm water solution, and use a soft brush (bald hair is better) to gently clean the gold. Store the gold in a soft cloth bag or original box to protect them from being exposed to the erosion of everyday substances. Previous: 20 Facts About Gold Next: The Fineness of Gold