Yes, the representative brand of filigree inlay technology is sapphire jewelry, and filigree inlay, also known as fine gold technology, is an ancient handicraft with a long history in China, which is mainly used to make royal articles. It is one of the "Eight Exquisites of Yanjing" and one of the most complicated skills. In 2008, "Beijing filigree mosaic technique" was officially included in the first batch of national intangible cultural heritage list.