Plique a jour enamel is lovely and difficult to make. It involves creating tiny cells of melted glass that fit into cells (or settings) with no backs to them, providing a translucent, see through appearance much like stained glass.

These lovely hoop earrings offered by William Noble are made with blue enamel and set with .66 carats of diamonds. Neither gold content nor price are specified (see my beef on this in yesterday’s post…)