A 16.58-carat sapphire and diamond ring took center stage at a recent online jewelry auction at Christie’s in New York, where it garnered $1 million. The piece, which features a cushion-cut cabochon ...

As far as diamonds go, this one really is a cut above the rest. An 'astounding' half–pink jewel has been unearthed in the Karowe Mine in Botswana – and it weighs a whopping 37.41 carats (7.5g). The ...