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A 20-carat blue diamond, that fetched $15 mn, may prove saviour for debt-ridden owner - The Economic Times
Rare 20.46-carat Okavango Blue Diamond offers peek into unique origin - Jeweller Magazine: Jewellery News and Trends
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39-Carat Blue Diamond Is the Latest 'Exceptional' Gem From the Celebrated Cullinan Mine - Reusch Jewelers: Since 1885
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