Yes, hard gold actually refers to physical gold, but it is "hard" gold made by a new method. Its texture is harder than ordinary gold. Also known as "thousands of feet Hard Gold". 0.005% special metal is added to increase its hardness, so as to achieve the corresponding hardness.

Therefore, the difference between hard gold and soft gold is that the fineness is the same, but hard gold has undergone a special process to harden gold and become ordinary gold when it meets fire. Because the technology is different, the price will be more expensive. Soft gold is high-purity gold, hard gold is synthetic gold mixed with other metals, usually copper, and pure gold is too soft to be inlaid.

Gold with different hardness has different uses and places. Pure gold is generally soft, and it is better to make gold bars, ingots or pure gold jewelry.