1. What are the gold classifications? In order to make better use of gold, gold is currently divided into eight categories: spot gold, paper gold, physical gold, gold ornaments, gold futures, gold options, platinum, silver and palladium, and gold and silver coins. 1. Spot gold is a market transaction for physical delivery, such as gold bars and coins. This is a virtual book transaction. There are related accounts in the form of digital symbols, but there are no actual items, but they have practical value. Market investors earn the difference by buying and selling, and banks finance them. Market participants mainly include gold producers, refiners, central banks, investors and other demanders. 2. Paper gold is a transaction of converting gold into paper, which does not involve the extraction of related physical gold. Earn the difference profit by opening a "golden passbook account". Because it does not involve the extraction of physical gold, the transaction cost is relatively low and convenient. 3. Physical gold transactions include transactions such as gold bars, gold coins and gold ornaments, with holding gold as an investment. Because it is purely physical, it is generally held less, because it generates less profit. Many people know about gold jewelry. Some of us usually wear rings, necklaces and the like, and some are also used for setting gems. 5. Both buyers and sellers of gold futures sell and buy back contracts with the same number as the previous contracts before the contract expiration date, that is, close positions, and there is no need to actually deliver real money and silver. The difference between the profit or loss of each transaction and the contract sales. This way of buying and selling is what people usually call "speculating in gold". 6. Option is the price agreed by the buyer and the seller in the future, and it has the right but no obligation to buy a certain number of targets. If the price trend is favorable to both buyers and sellers of options, they will exercise their rights and make profits. If the price trend is unfavorable to it, it will give up the right to buy, and only the cost of purchasing options at that time will be lost. 7. Platinum is also one of the first ornaments we are familiar with. Because the output is relatively small, it is also more precious. 8. There are four kinds of gold and silver coins: gold and silver circulating coins, gold and silver commemorative coins, gold and silver trading coins and pure gold and silver coins (or gold and silver ingots). Second, the purity of gold. Generally, the purity of gold can be divided into 24K and 18K. Under normal circumstances, pure gold is represented by 24k, that is, the gold content reaches more than 99.96%, which is also called pure gold. The higher the purity, the purer and fuller the color of gold. 18k is made of gold and other metals. 8K gold not only retains the color of gold, but also changes the softness of gold, which also broadens the choice space for consumers. At present, 18k gold is available in three colors: yellow, red and white, and consumers can choose freely.