Art Déco Camphor Glass Filigree Ring. Camphor glass is created by exposing crystal to hydrofluoric acid fumes. It was used in a variety of products in the Victorian era but hit its height in popularity in jewelry design during the Roaring 20s. Mostly used in big geometric plaques in necklaces and rings with filigree metalwork and set in the center with a diamond or pearl. This rectangular piece has a tablet style of camphor glass that is set with a single cut diamond (0.03 cts, J color and SI2 clarity) in a disc of black enamel. The open gallery and shoulders have an intricate filigree design. Made in 14k white gold.  The ring is a size 5, resizing may be possible, please inquire.