The extremely rare, 10-carat Mediterranean Blue diamond could fetch a whopping $20 million at Sotheby's High Jewelry auction ...

The Princess Royal's first engagement ring from her ex-husband Mark Phillips is front and centre in the striking portrait ...

The 2018 ring, which is still available for purchase, is made of non-precious stones and metals. “The classic logo “B” is applied in red stones to a blue stone background and sandwiched by ...