Super cute silver aluminum stud earrings stamped with a pumpkin design. Brushed aluminum finish. Hypoallergenic titanium posts. The discs are 3/8 inch across (about 9mm). Aluminum is lightweight and very sturdy, complete with darkened letters or design stamps and a brushed finished. The aluminum I use is high-quality, food-grade aluminum, which is even safer on sensitive skin than sterling silver!