One of its kind

The Bvlgari Blue Diamond, two-stone ring, which was designed in the 1970s, is being sold from a private European collection likely for at least $12 million.

The Bvlgari Blue Diamond, two-stone ring, which was designed in the 1970s, is being sold from a private European collection likely for at least $12 million.

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It was first given as a gift from the collector to his wife, was purchased for $1 million. It features a 10.95 carat “Fancy Vivid” blue diamond, the largest such of this cut ever offered at auction. One in about 10 blue diamonds of this size has a colour pure enough to qualify as “Fancy Vivid.”