Our Argentium Silver Cabochon Earrings are made with Argentium Silver bezels that hold beautiful gemstone cabochons and rest on the front of your ear lobe. They have a Niobium post that goes through your ear lobe piercing. Both Argentium Silver and Niobium are nickel free and very comfortable. Argentium Silver (or Argentium Sterling Silver) is 92.5% silver, 6.3% copper, and 1.2% germanium. It tarnishes much less frequently than Sterling Silver. These earrings feature a variety of gemstones in a variety of colors and sizes. They come with Commercially Pure Grade 1 Titanium ear nut earring backs.