Filigree Art Deco Necklace w/ Single Cut Diamond.  This magical pendant from the Art Deco period contains a slab of camphor glass with a .03 carat diamond set in the center and finished in 14 karat white gold. Camphor glass comes from a process of treating clear glass with hydrofluoric acid vapors to create a frosted appearance. Just inside the border of the pendant there is delightful filigree work that is reminiscent of an ornate window during the holidays.