While pearls are considered gemstones ... since the largest and most valuable ones are steeped in mystery. One black diamond, the Spirit of de Grisogono, is believed to be 312.24 carats but ...

Size: When other value factors are equal, larger pearls are rarer and more valuable than smaller pearls of the same type. Shape: Round is the most difficult shape to culture, making it the rarest ...

At the 2019 Grammys, Cardi B was basically dressed like an oyster. The most expensive pearl ever sold was Marie Antoinette's pendant. It sold for $32 million in a 2018 auction. But what is it that ...

Yet rarely in life does upheaval change everything. Hugh Burkitt reflects on his career as chief executive of The Marketing Society and passes on his seven most valuable pearls of wisdom. Thirteen ...

In the early twentieth century, a perfect pearl was considered the most valuable object in the world. The discovery of one in the Persian Gulf was a major event. It would even throw the global ...