This hip ornament is made from the half shell of a bivalve, the nacre side worn outward. The fikum is worn as a status symbol by Bontoc men on the front of the waist or on the side. Outer edges of the shell disk are usually etched in geometric patterns and there are three holes where colorful strands of yarn are passed through. These mother-of-pearl shells are obtained through trade from the Ilocos coast.