These earrings feature a three-dimensional design with a star-shaped silver frame and a clear stone set within. The star is about 1 centimeter in size. The earrings are up to 5 millimeters thick. They have a screw-back closure. Purchased a few years ago from the Stripe Club online store. The materials of the metal and stone are unknown. There is likely some aging of the metal. It's a unique design, not too flashy and not too plain, and I wore them often. However, I feel the star design is a bit youthful for me now, so I'd like to pass them on to someone else. Please understand that these are used items and may show signs of aging.