Shop › Blue Enamelled Necklaces by Mia Houghton Image 1 of 3 Image 2 of 3 Image 3 of 3 Blue Enamelled Necklaces by Mia Houghton from £40.00 Vitreous enamel on a sterling silver pendant. Strung on a sterling silver chain. Design: Select Design Blue with Silver Hoop Turquoise with Silver Hoop Blue and Turquoise Disc Add To Cart Added! Vitreous enamel on a sterling silver pendant. Strung on a sterling silver chain.