Mini Cal Poly San Luis Obispo CP Logo Stud Earring in Dark Green Enamel Officially Licensed California State Polytechnic University, San Luis Obispo Product Cal Poly CP Logo in Dark Green Enamel Post Stud Earrings with Metal backing with plastic disc & Rubber backing CP Logo Approximately 1.4 x 1.4 cm; Rhodium Plated Monitor Display Settings May Skew Actual Item Color