Sotheby's Pink Star diamond ring

3) A bit hit on our Instagram channel, we took this picture at the unveiling of the Pink Star in London, the largest Internally Flawless Fancy Vivid pink diamond ever graded by the GIA. Heading to auction at Sotheby’s Hong Kong in just a few days, we shall have to wait and see whether it sells for more than its pre-sale estimate of $60 million.

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