These stud earrings are made with clay and gold plated brass. They are minimal and modern, but bright enough to make a statement. They are made of gold plated brass, clay, and are finished with nickel / lead free, surgical steel posts and rubber backing. They measure: 10mm x 2.5mm. Material: Gold-Plated Polished Brass Geometric Shapes, Clay, Surgical Steel Posts (Nickel-Free), Rubber Backings Color: White, Gold Hypoallergenic surgical steel posts make these studs safe for sensitive ears This tiny stud set is the perfect size for traditional ear piercings or second-lobe piercings Colors available: Forest + White Marble, Black + White Marble, White Speckle, Black, Amethyst, Rose Quartz Shapes available: Hexagon, Triangle, Half-Moon, Bars All Cold Gold Earrings are handmade in small batches in Knoxville, TN