Scarcity, quality and historical factors. . As a high-end art, the supply of jewelry calligraphy and painting in the market is very limited, which reflects the scarcity. Due to the limited quantity, each work has its own uniqueness and extraordinary value, so it often pushes up the price at auction. Secondly, quality is also an important consideration in asset evaluation. For jewelry calligraphy and painting, its creator, production materials, technology and other aspects will affect its quality.