I-Brooch Nomgexo Yakhiwe kusukela ku-18kt yegolide kusetshenziswa indlela yokuphonsa i-wax, umgexo uziqhenya ngekhanda le-Anishinaabe Harpoon 1000 AD elitholakala esifundeni saseGreat Lakes, lihambisana ngokuphelele namaparele namadayimane ase-Japan ase-Akoya. Ekuqaleni yayisetshenziswa njengendawo ye-harpoon, le ngcezu yethusi emangalisayo iyisibonelo esiyivelakancane esivame ukutholakala kumamnyuziyamu. Ngenhlonipho ejulile ngomlando, lesi siqeshana sobucwebe siphefumula impilo entsha engcebweni yasendulo. Ngobuciko bokwenza ubucwebe, idizayini imelela intando nenkolelo yokunikeza injongo entsha ezintweni zobuciko ezibalulekile.