Liz and Dick and Lucy and the Ring

In 1969, Elizabeth Taylor and Richard Burton were arguably the world's most famous married couple, and they became even more well known when Burton bought his wife a 69-carat diamond ring that cost over a million dollars. At a Hollywood party, their paths crossed with Lucille Ball and an unlikely idea emerged -- within weeks the Burtons were taping an episode of "Here's Lucy" as themselves, with the ring as a special guest star. This is the story of a very large diamond, two very popular movie stars and one of America's favorite comic actresses -- and how they all came together to make TV history.