These are simple, natural studs made with real lapis lazuli stone pieces that are 12mm in diameter. They are round and dome-shaped stones with a beautiful royal blue color, and natural striations and color variety in the stone. You can see flecks of gold in some places, as well as some white streaks. No two pieces have exactly the same appearance, so your pair will differ a bit from the photo. Lapis Lazuli is a stone that has been treasured since ancient times, and is believed to have protection properties against evil. It is also known as the stone of truth. The earring posts are stainless steel, and the earring backs are rubber enforced for added grip and comfort. Great for everyday wear, or as a thoughtful gift for a loved one! These earrings are handmade with care. This item will ship in 1 business day. Thank you for visiting my shop! If you would like to view more of my items, please visit my homepage here: Thank you for visiting my shop! If you would like to view more of my items, please visit my homepage here: https://www.michaels.com/makerplace/storefront/artesana-americana