These earrings are named for Hedy Lamar. This "Golden Age" actress was credited with helping to co-invent a radio signaling device a.k.a a “Secret Communications System.” The system changed radio frequencies to confuse and hinder enemies during World War II, and it's a crucial part of how we communicate wirelessly today. Material: Clay with Nickel Free Ear Posts Approximate size: 3 inches ----------------- Because this product is handmade color and texture may vary slightly from what you see on your screen. This item is made by a human and not a machine so expect some inconsistencies and flaws. After all, our imperfections are what makes us beautiful!