Key Features Small Triangle Stud Earrings Hypoallergenic Material - Sterling silver Hammered effect design Butterfly push backs Silver Texture Triangle Earrings by Lisa Angel. This pair of tiny triangle shaped stud earrings are detailed with a hammered surface. They are fixed to posts featuring easy to use butterfly push backs. These hypoallergenic sterling silver earrings are perfect for those with sensitive skin. The best everyday earrings to wear again and again!