Put the perfect finishing touch to your look with these classic open-circle stud earrings in gold. Make them your go-to for daily wear. - Measures 6mm - Hypoallergenic, water-resistant - Heavy 18kt Gold Plate over brass with e-coating for extra longevity ** Our pieces are plated 1 micron thick, industry standard is .125. Quality is extremely important to us, and we wanted to ensure these pieces will last and work well for sensitive ears.