Key Features Irridescant Mermaid Effect Stud Earrings Round studs with iridescent effect scales Material - sterling silver Hypoallergenic with butterfly push backs Dimension - 6mm x 6 mm Little discs of beauty! Silver Mermaid Stud Earrings by Lisa Angel. This shining pair of earrings are sure to add a special touch to your jewellery collection! The mermaid design disc studs feature iridescent scales and are hypoallergenic and kind to sensitive skin. The studs are made of sterling silver and feature ear posts with butterfly push back to secure. A little treasure of the sea!