"These open teardrop hoop earrings are made from pure grade 1 titanium.  They are 1/8\" strips cut from titanium sheet then shaped and tumbled for a smooth satin finish. These earrings are completely nickel free and hypoallergenic, making them comfortable for anyone to wear. * Pure titanium  * Niobium ear wire option (drop down menu) * Earring drop length 1 1/2\", width 11/16\" * Lightweight * Nickel free  Pure titanium is considered the most hypoallergenic of all metals. It is commonly used in Modern Teardrop Stainless Steel Earrings, Nickel-free Modern Teardrop Earrings For Gift, Modern Nickel-free Teardrop Earrings For Gift, Minimalist Hypoallergenic Metal Teardrop Earrings, Modern Metal Hypoallergenic Teardrop Earrings, Modern Hypoallergenic Metal Teardrop Earrings, Modern Nickel-free Teardrop Earrings, Modern Hypoallergenic Teardrop Earrings, Modern Nickel-free Drop Hoop Earrings