The Premier Rose became one of the worlds largest diamonds when it was discovered in 1978. The diamond weighed 353.9 carats and was cut into three diamonds known as the Premier Rose family. All of them qualify to be one of the worlds largest diamonds. The largest of the three kept the name Premier Rose and now weighs 137.02 carats, is cut with 189 facets, and is the second largest pear shaped diamond in the world. It was sold in 1979 for $10,000,000.00.