Joshua Doyle Tift
My source would be the book TITANIC WOMAN AND CHILDREN FIRST. By Judith B. Geller so there is your SOURCE!!! She talks about the Billiard brothers who were diamond miners. Also read the books TITANIC The Great Lakes Connections by Cris Kohl and Titanic An Illustrated History. The gems may be in the safe still or in his room. Other shipments of diamonds would of course been shipped secretly but why all the talk about it if it was not true. History has a way of letting its secrets out slowly.