-The metal part of these stud earrings is made of 316L surgical stainless steel which is Nickel Free and Allergy-Free, the same material as the surgical instruments in the hospital. Because the 316L stainless steel has features of high-temperature resistance, low impurity content, it wouldn't cause allergic reactions to most people. Solid 18 KARAT GOLD plated, Posts are Hypoallergenic & Double Notched for extra Security.

-Made with Genuine Cubic Zirconia, the Cubic Zirconia is flawless as it is man-made to perfection with excellent cut, brilliant fire, and high clarity. Also, they will only need to be cleaned for sanitary reasons never and need to be polished as most earrings require. These stud earrings are classic and so elegant that women of all ages can enjoy them all day. Never Rust and Tarnish Resistance, Classic Stud Design, Enhances Your Temperament. Simple and Elegant Choice for Your Loved One.
 
-include Stone Size: 4 , 5 , 6 , 7, 8 mm Diameter 18 Gauge(1mm), 10mm Bar Length.