Material: AAA+ cubic zirconia sparkling，Gauge Size: 20G =0.8mm，10mm brass post with 18K gold plated earrings for women /men Hypoallergenic Stud Earrings: These stud earrings are made of brass posts with 18k gold plated, hypoallergenic, comfortable to wear 5 Pairs Stud Earrings Set: The stud set consists of 5 pairs of 3-7mm sparkling cubic zirconia stud earrings Princess Cut Earrings: Our stud earrings are princess cut cubic zirconia, nice cutting makes each zirconia sparkle, simple and elegant, fit to daily sleep wear Excellent after-sales service: Gemsme focuses on the research, development and production of jewelry and accessories, with good products and quality after-sales service loved by customers