This summer, the 32-carat, emerald cut Annenberg diamond will go up for auction in New York. The rare stone should fetch somewhere around $5 million. The gem will go on tour ahead of the sale with stops in Geneva, London, Hong Kong, Los Angeles and New York. A rare stone like this will attract buyers from around the world. Its not often one this size with perfect clarity goes up for auction. What do you do with a diamond that big? We can think of a million other ways to spend $5 million, but if you got it, why not spend it.