Along the way, I have had the pleasure of working with some of the most respected people in the diamond business including coloured diamond collectors, connoisseurs and private investors, diamond dealers and diamond cutters, jewelers (private and public), museum curators, and various auction houses.  It has been an interesting journey, and I am very fortunate to have examined some of the most important individual coloured diamonds that have ever been unearthed, such as the Hope blue diamond, the Agra pink diamond, the Pumpkin orange diamond, and the Hancock red diamond.