Shop › Enamelled Drop Earrings by Mia Houghton Image 1 of 3 Image 2 of 3 Image 3 of 3 Enamelled Drop Earrings by Mia Houghton from £28.00 Vitreous enamel on copper with sterling silver ear wires. Design: Select Design Blue Abstract Green Add To Cart Added! Vitreous enamel on copper with sterling silver ear wires.