? To distinguish all kinds of gold clearly, we must grasp one center and two basic points. Center A: Look at the chemical symbol, gold is Au, or look at the first English letter G of the English word golden, then the gold products are printed with Au and G, two basic points: 1, look at the lettering, and 2, look at the content. Basically, every piece of jewelry, such as the inside of the ring arm and the back of the pendant buckle, will have lettering. If you can't find it, you can ask the counter girl and take a ten-fold magnifying glass to see it clearly. For example, Au750 is 75% gold, which can be understood literally.
? At present, there are three common types: pure gold, k gold and platinum. Let's take a look at them. The first category: pure gold, nicknamed pure gold, thousand gold, ten thousand gold, 24K gold, 999 gold. We know that the purity of gold in industry is actually less than 100%, so gold with a gold content of more than 99% is usually called pure gold. In fact, there is no essential difference between thousands of gold and thousands of gold, and they are all at the same price when recycled. In 20 16, the state began to ban the names of "thousands of pure gold" and "thousands of pure gold", and called gold with a gold content of more than 99% "all gold". The purpose is to prevent merchants from using advanced terms such as thousands of gold and thousands of gold to sell at high prices. The lettering of pure gold is usually: Au999, Au9999, G24K, etc.
? Traditional weddings of pure gold are very common. At those wedding banquets, gold necklaces, golden pigs and dragon and phoenix bracelets are generally pure gold. That's the point, grandma. Gold is the right choice. In addition, if you want to invest in gold, then the first choice must be gold bars.
? Pure gold is characterized by its softness, which can be used to bite out traces with teeth. It's okay to make ordinary jewelry, but it's not suitable for gem setting. If you can't grasp the gem, you can't buy it, you can't do it well, and you can't be happy. If you slide back outside, the gems and diamonds will fall off, which will be a tragedy.
? In order to prevent this tragedy from happening, other metals were added to gold to improve its hardness, and the color of gold was also adjusted to make it more colorful. This is how K gold is produced. It is the second gold product we are going to talk about today, K gold. Its nickname is also lottery gold.
? According to color, there are three kinds of K gold: silvery white is K white, gold is K yellow, pink is K red, and rose gold. According to the gold content, there are many points: 18K, 14K, 10K, 9K. Take 18K as an example, and its characters are printed with 18K, G 18K, Au750 and G750.
? How does this k represent the gold content? It is equivalent to dividing the unit gold into 24 equal parts. What about 18K? That is, 18, 18/24=0.75, accounting for these 24 equal parts, and its gold content is about 75%; 14K gold, accounting for 24 equal parts of 14, 14/24=0.583, and its gold content is about 58.3%.
(Back to pure gold, the k number of pure gold is 24,24/24 =1,which is 100%, so 24K gold is pure gold, pure gold. )
? 18K gold is the first choice for setting gems, which is characterized by high hardness, stable performance, good ductility, beautiful color, high gold content and convenient recovery, that is, 75% of the price of gold is recovered. There is no saying that k gold is inferior to gold.
? The third kind of platinum, its element symbol is Pt. It should be noted that platinum is not gold, it and gold are two different precious metals. At present, platinum is rarely used in China. It can be divided into PT900, PT950 and PT990. Its advantages are acid resistance, corrosion resistance and not easy to fade. The disadvantage is that the hardness is not as high as 18K gold, and some slight wear and deformation may occur after wearing for a long time.
? There is a name to pay attention to: platinum, which means platinum Pt or 18K platinum. There is no official statement at present. So what should you do when you are not sure what this platinum is? Look! Word! Print! Whether it is Pt or Au or g, it is very clear. What needs to be added is that the preservation and fluidity of gold are better than platinum, so it is recommended to choose pure gold or 18K gold for investment.
? I hope every mother-in-law can buy her favorite jewelry and give the couple the best wishes.
? That's all for today's sharing. Welcome to like, collect and leave a message in the comment area. See you next time!