The gumdrop studs are new and gorgeous. They are gold plated over brass with semi-precious gemstones and approximately 11mm diameter. Green onyx is the stone featured but are also available in other colors. Shown in Group Photo: Turquoise, Smoky, Peruvian Chalcedony, Lemon Topaz, White Qtz. Side and model shot shown in turquoise. Please view our YouTube Video for a size reference on our most popular earrings including this product!