1 Monetary policy involves influencing the supply and demand for money through interest rates and other monetary tools.  Monetary policy is usually conducted by the Central Bank, e.g. UK â Bank of England, US â Federal Reserve.
The biggest yellow diamond, a 100-carat one, was sold in Geneva for $16.3 million. A private buyer acquired the Graff Vivid Yellow at a Geneva jewellery sale in Sotheby's auction house. Reuters reported that it was a world record for the jewellery auction of a yellow diamond, according to David Bennett, the chairman of Sotheby's Switzerland.
The diamond that takes first place is the Sergio. This rock was found in Brazil in 1895 and weighs 3,150 carats (about 1.4 pounds) making it the largest uncut diamond in the world. The Sergio is even more interesting because of its color, a rare black. Black diamonds like the Sergio are believed to have their origins in meteorites. Cullinan