Art Deco Ruby Engagement Ring in 18k White Gold.  This engagement ring features a .89 carat Round Brilliant cut, natural red ruby accented by old mine cut diamonds. Each of the .10ct old mine cut diamonds are as beautiful as the center ruby and the polished 18k white gold band gives this engagement ring a mystic beauty. Born of the Art Deco period between 1915 1939, this lovely ruby engagement ring is an antique from another world.