The color of pine is from the inside out. Different from the glazed pottery of Tang Tri-color, the color of turquoise Tang Tri-color is not only the surface color, but also the same three colors even if it is ground into beads!
The origin of tri-colored turquoise in Tang Dynasty is Shiyan, Hubei, but it has not been found in other places. It can be said that it is unique to China. The number of tricolor paintings in Tang Dynasty is very rare, which has a great relationship with its forming conditions. Turquoise is a kind of phosphate minerals containing water, and its colors are different due to the difference of mineral elements and water content. To form such colorful Tang tri-colors, it is as difficult as forming a pure pine with high porcelain and high blue!
However, although the number of Tang Sancai is scarce, its popularity is not high because of the pure high porcelain blue in turquoise. However, due to the uniqueness and scarcity of Tang Sancai, it is still loved by some senior players.
Generally speaking, the status of Tang Sancai may not be as good as that of Wulanhua and rape, but its unique characteristics and rare quantity are not lost to them at all.