French Retro Modernist Smoky Quartz and Gold Pendant, Circa 1970

A French retro modernist smoky quartz and gold pendant, with a square, shaded tile of smoky quartz, held by a surround of rectangular heavy gold wire, with abstract, geometric gold, Mondrian influenced, decoration, typical of the period, on a simple gold loop bail, with a French eagle mark for 18ct gold and a partial maker's mark, circa 1970.