Graff makes another appearance on the list with this gorgeous, large yellow diamond ring. It last sold for $16.8 million in 2014. The diamond weighs a staggering 100.09 carats, which is extremely ...
Through his hands have passed some of the world's most fabulous and important gemstones, including the Wittelsbach-Graff diamond and the Graff Pink diamond, once owned by New York's Harry Winston, but ...