Which of the following does not belong to the common mosaic technology of traditional furniture?

I would like to ask, "What are the common mosaic techniques of traditional furniture?" There are the following:

1, enamel inlay. Enamel began in the Yuan Dynasty, also known as cloisonne, and reappeared in the Jingtai period of the Ming Dynasty. Enamel color is made of copper plate, the surface of which is bonded with various patterns with copper wire or silver wire, and then mineral enamel color is coated on the thread of the object, and then it is fired at high temperature. According to the production method, it can be roughly divided into silk enamel, filling enamel and painting enamel.

2. Jeweling. It is a kind of traditional arts and crafts in China, which selectively embeds a variety of processed precious materials on the same object. Its handicrafts are refined by embedding treasure, which is famous for its precious materials, laborious production and gorgeous and exquisite finished products.

3. Mother of Pearl. Mother-of-pearl, also known as "Luodian", "snail filling", "cymbal embedding", "clam sinking" and "snail crawling", refers to the general name of decorative techniques that use snail shells and shells to grind into thin figures, flowers and birds, geometric figures or characters and embed them on the surface of objects according to the needs of the picture. It is a unique artistic treasure in China.