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Sunburst Rare Diamonds Inc.
Of all colored diamonds, blue diamonds are considered to be one of the rarest and most valuable types. In terms of rarity, blue diamonds are just as unusual red, pink, and violet stones. While all blue diamonds are rare, the deepest blue diamonds due to a high color intensity are the rarest. The larger the stone, the rarer it is to find, and therefore, as a blue diamond gets larger, the value goes up.