Harry Winston in May announced that it is involved in the establishment a polished diamond investment fund.

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Other assets include jewelry company Graff Diamonds International, a polished diamond trading company in Antwerp, a real estate company in Luxembourg and a stake in a South African diamond wholesaler.

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Other assets include a polished diamond trading venture in Antwerp, a real estate company in Luxembourg that holds properties in London's tony Mayfair district, and a stake in a South African diamond wholesaler.

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The Courageous Spirit collection consists of a one-of-a-kind necklace and a pair of earrings featuring 2.8 carats of rough Bunder diamonds and 25.34 carats of polished Bunder diamonds including a 5.04-carat round brilliant-cut white diamond and a 5.02-carat round brilliant-cut cognac diamond all cut and polished in India.

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Once a diamond is cut up and polished its origins are effectively disguised.

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Yet those close to the parliamentary body say it is unlikely Diamond will have a second chance to put on a polished appearance because the committee is due to be reshuffled next week.

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