The diamond producer described the 41.82 carat stone as being of ‘exceptional quality’. The most recent blue diamond of this calibre was discovered in April 2021 ...
Africa-focused Petra Diamonds (LON: PDL) has unearthed an ultra-rare blue diamond weighing just under 42 carats at its Cullinan Mine in South Africa, a discovery that could sell for as much as $40 ...
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