On October 20, as the lead highlight of its flagship Jewels: The New York Sale, Christie's will offer The BVLGARI Blue Diamond – a stunning two-stone diamond ring designed by Rome's legendary house of BVLGARI in the 1970s that's expected to fetch over $12 million. The ring features two extremely precious stones (above): a triangular-shaped, colorless diamond of 9.87 carats paired with a stunning triangular-shaped Fancy Vivid blue diamond of 10.95 carats – the largest Fancy Vivid blue diamond of this cut ever to be offered at auction. Fancy Vivid blue diamonds of this size are among the rarest of colored diamonds - only one in about 10 million will possess a color pure enough to qualify as "Fancy Vivid". The ring will be priced upon request for prospective bidders, but is expected to achieve in excess of $12 million and is positioned to become one of the top-selling diamonds at auction in 2010. The ring is being offered by a private European collector who has kept it in his family for almost 40 years.