Odigba (coral-beaded collar) is a rigid neck collar made of coral beads, worn as part of ceremonial attire only by senior princes who have been made Enigie (Inneh 2007, p. 107). Although Ibafe (2007, p. 43) argued that the Odigba was introduced during the Ogiso period (c. 900–c. 1170 AD) by Ogiso Ere, along with other symbolically important Emwin Arhe, such as the Ada (ceremonial sword) and the Ẹbẹn (ceremonial sword), this seems unlikely, as coral was only introduced in the late 15th century through trade with Portuguese merchants.

The Ukpẹ ọkhọkhọ is a distinctive hairstyle and coral-beaded headdress worn by the Iy’Ọba. The headdress includes a projection called the ‘ede Iy’Ọba’, which indicates that “her spiritual potentialities are closer in quality to those of her ruling son than they are to the powers of the nobles” (Aigbe Eson and Ihama Iguneronmwon in Blackmun 1991, p. 60). The Iy’Ọba’s hairstyle and headdress are meant to resemble ukpe-okhue, or the curved parrot’s beak (Kaplan 1993).

Barbara Blackmun (1991, p. 60) argued that “Benin art is multivocal, and any depiction of the Iye Ọba [sic] is a reference to Idia. Every woman who holds the office of lye Ọba plays the part of Idia, the ideal model of an Ọba’s mother.” Wearing the Ukpẹ ọkhọkhọ is one of the ways the Iy’Ọba plays the role of Idia.