Geneva (AFP) - The Raj Pink, the largest intense pink diamond ever certified and valued at between $20 million and $30 million will be auctioned on Wednesday at Sotheby's November jewellery auction.
Sierra Leone's 'Peace Diamond' shown in NY ahead of auction
Sierra Leone 'Peace Diamond' sells for $6.5 million at auction
Gems and jewels go on display in Los Angeles ahead of auction
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