The Kimberley

A Flawless, 70-carat, step cut, champagne-colored diamond that was found in the Kimberley Mine, South Africa. It was recut into this modern shape in in 1921 from a large, flat stone that was once in the Russian Crown Jewels. In 1958, the stone was again recut by it's owners, Baumgold Bros., New York City, to improve the proportions and increase brilliancy. It now weighs 55.09 carats and is valued by the firm at $500,000, but is probably worth considerably more. Baumgold Bros. sold the stone in 1971 to an undisclosed collector. Source: Diamonds: Famous, Notable and Unique (GIA)