The Royal Tonsure ceremony, or the cutting of the top knot, marked the end of childhood and the beginning of adulthood. All royal children had to go through this ceremony at the age of 10-11 years of age. The ceremony was performed by the King, and lasted 3 days and 3 nights. It involved royal children wearing the most splendid costumes, and vast amount of jewels on all parts of the body. Since the end of absolute monarchy in Thailand, in 1932, the tonsure ceremony has also ended. The jewels worn during the ceremony were necklaces, brooches and bracelets put together to form one large chest-piece. Different ranking child would wear different costumes and jewels. They were then given parts of these jewels as presents on entering adulthood.

The jewels and costumes worn by the Royal Children differred according to their ranks, as seen below