What do you mean by stone inlay?

Colored stone inlay is a kind of traditional arts and crafts of Han nationality, which integrates stone carving, relief and flower board carving. According to the content and color requirements of the subject matter, it is made of stones with maps. He has successively created a variety of techniques, such as flat inlay, high inlay and full inlay, which extend to Chinese fairy tales, folk customs and modern life. Besides pyrophyllite, color mosaic materials include bloodstone, coral, agate, pearl and gold. Colored stone inlay is one of the intangible cultural heritages in Zhejiang Province.