A Rare Encounter: the Hope and Wittelsbach-Graff Diamonds May 23, 2010

You are invited to see the world's most extraordinary blue diamonds - the Hope and the Wittelsbach-Graff - displayed together for the first time. The Wittelsbach-Graff's deep blue color, flawless clarity, and royal history make it one of the most celebrated gemstones known. Both diamonds come from India and share their rare blue color. Could they have come from the same mine? Smithsonian scientists plan to compare the properties of both gems and explore this intriguing possibility.