The decline of diamonds as a store of wealth is accelerating as low-cost laboratory gems seize more of the market.
A university lecturer has successfully grown a full-size ruby from a tiny offcut in what is believed to be a world-first ...
It is thought that some of the diamonds may have come from the necklace linked to a scandal that contributed Marie-Antoinette ...
A diamond necklace that has been worn at two British coronations, and is thought to have stones from the infamous necklace at ...