The 30.62ct Blue Heart diamond, part of the Smithsonian National Gem collection, was originally faceted by French jeweller Atanik Eknayan in 1909-1910, and then set in its current platinum ring setting by Harry Winston in 1959. Photo credit: Chip Clark.

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The 30.62ct Blue Heart diamond, part of the Smithsonian National Gem collection, was originally faceted by French jeweller Atanik Eknayan in 1909-1910, and then set in its current platinum ring setting by Harry Winston in 1959. Photo credit: Chip Clark.

The 30.62ct Blue Heart diamond, part of the Smithsonian National Gem collection, was originally faceted by French jeweller Atanik Eknayan in 1909-1910, and then set in its current platinum ring setting by Harry Winston in 1959. Photo credit: Chip Clark.