An enamel and diamond religious pendant, France, circa 1900, the circular pendant depicting the

An enamel and diamond religious pendant, France, circa 1900, the circular pendant depicting the Virgin Mary with hands clasped in prayer, her halo set with rose-cut diamonds, against a patterned background in multicoloured plique à jour enamel, within a circular gold frame bordered with seed pearls, length 4.0cm including bail, French export assay mark for 18ct gold, pearls untested