What is the world's largest polished blue diamond?

Blue diamonds can range in colour from a deep navy blue (The Hope Diamond) to a pale almost-white blue tint, and their value varies accordingly. So while The Idol's Eye is 70 carats, it's a very pale blue that doesn't compare with the deep blue of the Hope Diamond, which although smaller at 45.52 carats, is more valuable. The world's largest blue diamonds are way bigger than one-carat.
Here is the list of most known and expensive blue diamonds of all times:
http://cultured-diamond.blogspot.com/2010/04/15-most-famous-blue-diamonds-of-all.html

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The world's largest polished blue fancy colored diamond is the 70 carat Idol's Eye diamond, which possesses a delicate yet distinct hue of blue called 'rosy blue'.

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Sorry hon, your blue diamond engagement ring sounds beautiful but it is definitely not a contender for the biggest blue diamond in the world. I've never heard of the Idol's Eye diamond that other guy was talking about, and as far as I know the largest deep blue diamond known to man is the Hope Diamond, weighing in at 45.5 carats. All the world's largest blue diamonds weigh around 30-40 carats and are held in museums.

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