Body ornament Japan By the Middle Jōmon period, the food supply in Japan had stabilized enough that the Jōmon people could focus their activities more on crafts and spiritual life. This led to the development of a wide variety of body ornaments, including necklaces and hairpins, some of which feature very elaborate designs. It is speculated that body ornamentation may have served a religious or spiritual purpose, but it may also have represented social rank and status.. Body ornament 62279