Zeta Phi Beta Sorority Paraphernalia Women's Chain Necklace. Classic Silver Metal Diamond Cut Curb Chain Necklace Featuring Prominent ZPB Greek Letter Detailing Integrated into the Center for a Sleek, Modern Look. Finished with a Lobster Clasp Closure and Adjustable Extension Chain for a Comfortable, Customizable Fit. ZPB Letters Measure 1.35 inches. Chain Measures .30 inches Wide.