The story behind world's 'richest woman'

Gina Rinehart, World's richest woman [Photo:BBC]

The richest woman in the world, according to a respected business magazine, is not Oprah Winfrey, Queen Elizabeth II or L'Oreal heiress Liliane Bettencourt. It's a relatively unknown Australian mining magnate. So who exactly is Gina Rinehart?

Asked once to sum up her concept of beauty, Gina Rinehart did not point to the pearls that so often adorn her neck.