One of the world's rarest diamonds is up for auction - for an expected £15million. The Mediterranean Blue is a vivid blue diamond ring weighing more than ten carats. And the stone is classified as a ...

Bond Street Auction is preparing to close out the season with an event that collectors and connoisseurs won’t want to miss.

Diamonds have long been the preferred material for engagement rings, exquisite jewelry, and investment pieces. However, as ...