Gold has high purity, wide application, high market value and relatively expensive price. The gold content of gold is as high as 99%, and its scarcity and multi-field demand keep its price high. As a rare precious metal, gold has high purity, high preciousness and high price in the market. Gold is widely used in jewelry, investment and industry, and its supply is limited, which increases its scarcity. Gold also has the characteristics of anti-inflation and hedging, and has become the choice of investors. Rose gold is an alloy with low gold content, and its price is relatively low. Rose gold has a unique color and style in jewelry design, but its market value is relatively low because of its low gold content. From a metal point of view, gold is more expensive than rose gold.