Ahead of a Sotheby's auction, the Mediterranean Blue diamond valued at USD 20 million has gone on display on Tuesday in Abu Dhabi.

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A historic blue diamond once worn by Indian royalty is expected to fetch between $35m and $50m when it goes under the hammer in May. The 23.24-carat gem, known as the Golconda Blue, is set to lead ...

Its latest Blue Book is a love letter to the ocean. Witness the artistry in its "Sea of Wonder" collection.