Ulu is the Hawaiian word for breadfruit. The Ulu tree is a tree with beautiful leaves and its fruit was a common source of food for the Hawaiians. * Materials: 18k gold plated, antique silver plated or 18k gold plated with black enamel. Base metal brass. Posts hypo-allergenic. * Size: 5/8" x5/8" * Collection Hawaiian Nature Collection ® Clip option is made with our larger size Ulu design 0.75" x 0.75" The design is copyrighted by Leighton Lam Designs and is the original artwork of Leighton Lam.